Slowly increasing hardware problem - Samsung Galaxy Tab S4 Questions & Answers

Hi all,
I have a general hardware problem with my Samsung Galaxy Tab S4. Maybe someone here has an idea or tip for me.
I still used the factory software without any rooting or unlocking the bootloader. So everything original and up to date.
A few month ago the tablet began to restart in the middle of using it. At the beginning it happened seldom, but then more and more often. Also during the restart new restarts happened more and more often, so that it took several retries, until it started again. Now it is not usable anymore, because it is not running longer than a few seconds before the next restart if it happens to boot completely at all.
I was able to make a factory reset but this didn’t solve the problem.
My first theory is, that this could be a problem with the battery, that it is slowly dying and had more and more problems to hold the voltage. But the problem also exists when the power supply is connected. So I am not sure if this rules out the possibility, that this could be cause by the battery? Does somebody know how this is internally wired, if a broken battery could still have a negative effect when the power supply is connected?
Do you have other ideas/advices, what could be the problem or would could be helpful to do?
Thanks in advance for any help.
Best

The USB power input can't sink enough current to boot it or even run it without the battery acting as a reserve during peak usage spikes.
Replace the battery and go from there.

Thanks, then I will try this.

Vertex9999 said:
Thanks, then I will try this.
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Hi Vertex, have you tried this already? I have pretty much the same problem and the battery was also my first intuition, but I don't know if buying a new one is worth it. Thanks!

Hi,
unfortunately I didn't had time to do it yet. I want to change the battery myself and for that I will need time and somebody to borrow me a hot air gun, because everything is glued together.
I will report, when I have done it but it will be at least a few weeks.

Alright, so I'll probably try it sooner, I'll update after replacing the battery. Also, if you haven't tried it yet, you might want to try just disconnecting the battery from the motherboard and connecting again after like 20s, I've read that it sometimes resolves this problem, but it didn't work for me. Fortunately removing the back lid of tab s4 is pretty easy, I used hairdryer, so with heatgun it should be even easier.

Thanks for the tips. I am currently on vacation but when I am back I will also try with a hairdryer.
Any additional tips for removing the back lid to somebody doing it the first time beyond what you can see in the youtube videos? How do you glue it back together?

Hi, sorry for the late reply.
I have eventually replaced the battery, and nothing changed unfortunately… I did a factory reset, etc. However I also had an issue that you didn't describe in your original post, which is that USB connection is not working, it only charges the battery, when connected to the PC while booted it's just not visible at all (tried with several cables, two computers, on windows and linux), when in download mode it kind of shows up, but it's not recognized and no drivers or any solution that I've found are working, so I don't know if it's still hardware problem something with the USB related parts or something in the system on lower level. Well, I'll be trying.
About the back lid. Beyond YT videos only thing that comes to my mind is patience. About the glue, you have few options and it depends a bit on how removing the cover goes. 1) glue stays in the more or less same condition as before removing the cover - that's how it went for me - in that case you can just reuse it, just by closing the cover and pressing it down for some time, it's probably not as strong as new but for me it worked just fine, especially if you use a book cover for the tablet there won't be a problem.
But if the glue came off, wrinkled a lot, or just doesn't stick anymore, 2) you can either use a special epoxide glue often with signature like T-7000 or T-800 but if you just look for a glue for smarphones you'll easily find it. Or 3) Buy a special sticker for this exact device which has a specific shape, it's pretty much the same thing as is used by manufacturer.

Related

power/charging issue

ive been having a problem with this phone for a while. it has a problem with turning on and statying on. i will set it on charge while its powered off for atleast two hours, but as soon as i turn it on it will last for about 5 mins and turn off.
i first replaced the battery and it has the same problem. so i replaced the charging port and it was working fine for a few weeks and now its back to the same issue. i cant even get it to charge now
so just trying to figure out what kind of other components it could be
Disclaimer: You're at a more advanced level than I am. I've never done phone repair, and I don't know enough about phone hardware to say if there are other components that could be responsible. I'm a software guy.
That being said, I'll chime in with what I do know, on the off chance that it's actually helpful.
When computers get too hot, they do an automatic thermal shutdown to try to prevent permanent damage. I assume smartphones do this as well. You're on XDA, so there's a good chance you like to tinker. Did you overclock the phone? Overclocking generates more heat, which could potentially lead to a thermal shutdown or permanent damage. Or you might be using or storing the phone in a hot environment.
Have you tried using a different charging cable? Maybe the cable or its connector went bad. You could also test the cable with a different device. Maybe the wall outlet, etc went bad. Did you check the connectors that the battery attaches to, to make sure they're clean?
When you opened the phone to replace the charging port, maybe you didn't put it together quite right, so over time something came loose or got pinched. Desktops and laptops use various types of adhesives such as thermal paste, and computer technicians have to remember to reapply new adhesive when putting a machine back together. Maybe phones use some adhesive too, and maybe you forgot to reapply it?
Hopefully someone more knowledgeable about phone hardware will chime in, but the Incredible 2 section of these forums has been a ghost town lately. That's why I'm giving my two cents. If it were me, I'd just buy a new phone.
Slinkwyde said:
Disclaimer: You're at a more advanced level than I am. I've never done phone repair, and I don't know enough about phone hardware to say if there are other components that could be responsible. I'm a software guy.
That being said, I'll chime in with what I do know, on the off chance that it's actually helpful.
When computers get too hot, they do an automatic thermal shutdown to try to prevent permanent damage. I assume smartphones do this as well. You're on XDA, so there's a good chance you like to tinker. Did you overclock the phone? Overclocking generates more heat, which could potentially lead to a thermal shutdown or permanent damage. Or you might be using or storing the phone in a hot environment.
Have you tried using a different charging cable? Maybe the cable or its connector went bad. You could also test the cable with a different device. Maybe the wall outlet, etc went bad. Did you check the connectors that the battery attaches to, to make sure they're clean?
When you opened the phone to replace the charging port, maybe you didn't put it together quite right, so over time something came loose or got pinched. Desktops and laptops use various types of adhesives such as thermal paste, and computer technicians have to remember to reapply new adhesive when putting a machine back together. Maybe phones use some adhesive too, and maybe you forgot to reapply it?
Hopefully someone more knowledgeable about phone hardware will chime in, but the Incredible 2 section of these forums has been a ghost town lately. That's why I'm giving my two cents. If it were me, I'd just buy a new phone.
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well i greatly appreciate your lengthly response. to be honest, it is my mothers phone, which is why i want to try and fix it. i gave her an iphone so she really doesnt need this phone but i would like to figure out what is wrong because i do like to tinker with things. i have tried different chords, wall outlets, usb ports on the pc etc. i will reopen the phone to see if everything is back together, because thats the only thing i can think of from what you mentioned.
thanks again. if anyone has had a similar problem, let me know
sounds like you're either having a battery issue or need to replace your charge port on your phone. its a really simple process all you do is order the port from like amazon or ebay and the old one on your phone just unplugs from your phone circuit board there actually is a tutorial forum in the development page for the droid incredible 2 that gives you instructions on how to do this. hope this was of some help to you and if so please click thanks.
jam0688 said:
sounds like you're either having a battery issue or need to replace your charge port on your phone. its a really simple process all you do is order the port from like amazon or ebay and the old one on your phone just unplugs from your phone circuit board there actually is a tutorial forum in the development page for the droid incredible 2 that gives you instructions on how to do this. hope this was of some help to you and if so please click thanks.
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The OP already tried both of those things.
Oh ok yeah i just noticed where he put that. Hardware problem maybe. Im more into software myself than i am hardware.
MINE TOO! Omg
This... it's too much. Okay, a month ago the damned power button got too hard to press in, which should have been a warning that the hardware was getting faulty I suppose. But I downloaded an app that let me use the volume button to turn screen on/off. (I won't say which because I half-blame it, unfairly, for killing my phone
(Sorry, I'm still —mourning! the death of my phone I guess.)
The app was an ugly solution, I guess, but it worked. (I couldn't turn the screen off easily, so I set the screen-off to 10 seconds.) And I hadn't used screenshots in a while so that was no big deal; and my ROM could get me to Recovery easily enough, so screw the power button, right?
But then last night, my phone STOPPED CHARGING! I did a batt pull, tried new cords; turned off every useful app. I even went back to stock ROM, which (even though plugged in) left me with 20% batt. Might as well have bricked it, I guess.
Nothing worked. I was able to turn bluetooth back on so I could use my Air Droid acct to get my on-phone pictures, at least (everything else is safe on the SD), and then I charged it overnight in the wall and hoped for the best.
I was pretty thrilled to wake up to 100% charged! —For a few minutes. As soon as I unplugged it, it started discharging fast, and then not even the wall charger stopped it from discharging.
After brooding, for a few hours, I called Verizon tech. The tech (VERY nice, admittedly) said my Dinc2 was just dead. (Damn they're good: he was more sympathetic than a doctor delivering bad news!!) —But I feel so lost. He offered me a DNA or a Dinc 4G (and some motos and crap), but said my Dinc2 wouldn't be worth fixing. He said the power button alone was a PITA, but the dongle thing you plug the charger into was likely the problem, AND it might be the battery. Maybe he said other problems, but ultimately he suggested some pre-owneds he had for sale (I'm trying to keep my unlimited data plan), or try PhoneKarma.com. (He said he didn't recommend eBay, where they have Dinc 2s, but I'm not sure why.)
So ...do Dinc2s just have power issues after (?) 3 years? I guess that's a pretty good lifetime, but boy is it depressing. (I know — hooked on a damned phone. #Sucks.) I mean, it would be stupid to fix this one, or buy another one, right?
@Trebuchette, no matter what machine you use, rechargeable batteries do not last forever. Order a new battery from Amazon or eBay and you should be fine. They're pretty cheap and easy to replace. http://www.amazon.com/HTC-Incredible-6350-BTR6350B-Packaging/dp/B0064SI3QA
A case might make your power button easier to press. The OtterBox Defender is an excellent case that you can get for $15 used (very good condition), if a new battery successfully fixes your problem.
Hey: might be worth a shot! I did try another batt, but it was older too. And I didn't think of an otterbox at all, tbh. Thanks! Might be worth a try!
Hey: does it matter much if my USB cable is LG or whatever? I tried several different USBs too, but I'd been using this LG one (no idea how!) for probably about a year.
No, the brand of micro USB cable should not matter. It's a technical standard.
Don't buy a case until you've verified that a new battery actually fixes your problem. If a battery doesn't fix it, it's only a few bucks lost. In that case, I would then get a new phone.
i just came back to this thread after i basically put the project on hold for a while and wanted to see any new suggestions. so after leaving the phone alone for two months, i pluuged the phone in and i saw that orange ligh indicating it was charging. so far so good, im not using it as a primary phone which is good, but that would be my suggestion is to give the phone a rest for a while
EDIT: yeah scratch that, its doing the same **** now

[Q] Tab Pro 12.2: Screen and Button Issues

I just got this tablet (to replace the garbage SGH-I467) a few days ago (Thu., May 15th). For the first couple of days it worked like a dream. However, the last 4 nights/3 days, I have been encountering some strange issues. What I will do here is describe the issues I've been having, what I have done in attempts to fix them, list some of the things I think may have caused it, and include any additional info/questions.
Before all that though, I would like to mention that I am not a developer, but I am a bit 'tech savvy' and am more familiar with/knowledgeable of technology than the average user. Also, I have spoken with Samsung tech support and even had the support guy access my Tab Pro 12.2 remotely (I will explain what I learned from that below). So, without further ado (I apologize in advance for the long winded nature of this post, but I want detailed):
The Issues:
1) Screen "flickering"—By flickering I mean that it is shutting off and turning on rather rapidly and sporadically, though inconsistently.
I first encountered the problem 3 days ago (the 18th).
Four nights ago (the 17th), before going to bed, I plugged the device into the same outlet I have used for all my mobile devices, when I woke up (on the 18th) the screen was doing exactly what I described. I hit the home button a few times and it stopped.
That night (the 18th) I plugged it back in to the usual spot before going to bed. The next morning (yesterday, the 19th), the screen was "flickering" again. I tried to press the home key a few times, as well as both the soft keys, nothing. In between "flickers" you can see the lock screen, where I have to enter a pin, but even while visible I can't type anything. So this time, to try to solve the problem, I held the power button + volume up to get to recovery and wiped the cache partition, rebooted the device, and viola, it worked again. Thinking that I may have to factory reset the device if the problem persists, I used Kies to backup all my data. I used the tablet the rest of the day, even plugged it in (in a different outlet than the one next to my bed) for a while and had no issues.
Last night (the 19th) I did pretty much the same thing, but this time, thinking that it might be an issue with the device getting too much power (the Quick Start Guide says: "Note: Connecting the travel adapter improperly may cause serious damage to the device."), I used a travel adapter from one of my other, USB 2.0 devices (the only difference between the adapters is the output: 2.0 = 5.0V—2.0A vs. 3.0 = 5.3V—2.0A, and output was specifically what I was concerned with). This morning (the 20th) the problem has returned, but now includes my second issue: the hard home button and both soft keys, back and recent apps, no longer function. So I immediately tried to wipe the cache partition and reboot, but this time it didn't work. Thankfully I had anticipated this yesterday and had that Kies backup, so I wiped the entire device back to factory settings. But alas, it was unsuccessful and the problem persists, including the loss of button functionality, with the exception of the power and volume buttons.
It is important to note that when I first got the Tab Pro 12.2 and set up the lock screen, I used the option that delays the actual locking of the device 10 minutes after screen timeout, but set it so that if I lock the screen with the power button it ISN'T delayed and immediately locks. That being said, a couple of times when the "flickering" stopped long enough to momentarily use the device, I was able to enter my pin and unlock. But when the screen starts flickering again, it locks the device, so the power button must be affected as well. Though since the first factory reset of the device, I haven't set up a pin. I have done several factory resets and none of them have worked. The best result has simply been limited (no back, recent apps or home key) and momentary functionality. I tried using Kies to do emergency firmware recovery, but every time I click the option it disconnects the device.
When Samsung tech support remotely accessed by device (I used one of the momentary functionality windows to download the required application) the agent was able to utilized soft and home key functionality, even though I couldn't. This tells me that it was hardware related, not related to UI/software.
So there are a couple of things I think may have caused/contributed to the problem:
The first, which I vaguely touched on above, is the power issue. Perhaps I have shorted the device out somehow. The outlet I use to charge things while I'm sleeping is on the wall behind my bed, so I have to use a common extension cord, one that has 3 outlets at the end. I have a light plugged into that and in the past have charged both my SGH-I467 (AT&T Note 8.0) and my SGH-I747 (AT&T S4 Active) with that cord and outlet. That is the only place I have charged the SM-T900 overnight, but none of the other power sources I have used have caused these issues.
The second possibility is a virus some sort. I have never used the Samsung app store on any of my other devices, but in order to update the Hancom Office suite I had to. Since I had an enjoyable time using it to that end, I decided to see what else I could find on Samsung's store. I downloaded a couple of things (the "Official Captain America game" and a couple wallpaper/theme apps) and was looking around the store to see if there was anything else I wanted to download. I found several apps that had reviews claiming they were trojans, so I immediately checked the reviews for the apps I had downloaded, but none of them had similar reviews. However, that does not mean they didn't have viruses.
So, what do the resident Android gurus of XDA think about these issues?
I tried searching all over the forums and elsewhere online for people having the same issues, but couldn't find anything. Have any of you ever encountered something similar to this?
Until recently, I hadn't ever heard of anyone getting a virus on an Android device. Are they common? What is the nature of Android viruses?
If these issues do have something to do with overcharging/shorting the device, how can I mitigate that problem? Tonight when I charge the tablet, instead of using the USB 3.0 charging cable, I am going to try just using the 2.0 cable. As I understand it, that can be done by simply plugging it into the right side of the port. Hopefully that will stop exacerbating the problem.
Again, I apologize for such a long winded post. I would like to thank you all in advance. If ever I have problems with an Android, you guys are the ones to ask!
*UPDATE* Before I started typing this I was attempting to run the Kies 'Firmware Upgrade and Initialization', as opposed to 'Emergency Firmware Recovery', to see if that too would disconnect the device. Unfortunately it said that my device needed to be charged first. So I shut it down and plugged it into a surge protected strip and began typing this post. Occasionally I would go over an check the charge. While it was shut down and charging I was able to use the home key to bring up the green battery. Once the charge looked like it was about 75% complete I turned it back on and lo and behold, the "flickering" issue looks resolved and so does the button issue. I can go back, enter the recent apps and task manager, and use the home key functions. For how long this will last, however, is unknown. I guess we'll see in the morning. I'll post what happens tomorrow.
What kind of case are you using? Some users have seen issues with some cases that use magnets for auto-sleep-wake. When the front of the cover is flipped back behind the tablet, the magnets seem to activate the auto-sleep feature
Sent from my SM-P900 using Tapatalk
RE: Case?
dodo99x said:
What kind of case are you using? Some users have seen issues with some cases that use magnets for auto-sleep-wake. When the front of the cover is flipped back behind the tablet, the magnets seem to activate the auto-sleep feature
Sent from my SM-P900 using Tapatalk
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Click to collapse
I am not using a case or cover at all...
same issues here
Sounds exactly as the same issue I have had the last week. I have done several factory resets triad to avoid installing as many applications as I had prior the factory reset (to see If it was an app causing the issue). No solution yet but I will try your way with kies described above. I have a tab pro 8.4.
VeinkWiles said:
So, what do the resident Android gurus of XDA think about these issues?
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I am no guru, but it sounds like a loose connection. Maybe it is affected by temperature. Try it on a (not too) hot water bottle or on freezer packs.
Mike Austin said:
I am no guru, but it sounds like a loose connection. Maybe it is affected by temperature. Try it on a (not too) hot water bottle or on freezer packs.
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It's not overheating. It can get warm, but it's never gotten hot. And I've had other devices that have seriously overheated and still functioned, albeit slowly.
**UPDATE**
After I got it working the night I originally posted I let it fully charge (it's important to note that I got it up to about 75% while it was off; green battery the only thing on the screen, and I had home button functionality), then disconnected it and disabled all the radios, put it in power saving and left it over night without power. Doing that I was able to use it all day yesterday. But while I was full-charging it, after it reached 100%, I noticed that it started acting up almost immediately. The sound was on and kept making the lock screen sound (that's how I noticed it from across the room). So it is tied to the power/lock key. But disconnecting it before it could get out of control mitigated the problem. Last night I was going to try to charge it over night with USB 2.0, but I fell asleep before changing the cable out, so it charged on 3.0 all night and is back in poor repair. I'm currently trying to full charge it while off to see if that gives me functionality again.
Either way, each time I fix it the solution becomes more difficult/timely than the previous one. It's clearly not getting better, so I'm going to have to send it in to repairs.
Sent from my SAMSUNG-SGH-I537
VeinkWiles said:
It's not overheating. It can get warm, but it's never gotten hot. And I've had other devices that have seriously overheated and still functioned, albeit slowly.
**UPDATE**
After I got it working the night I originally posted I let it fully charge (it's important to note that I got it up to about 75% while it was off; green battery the only thing on the screen, and I had home button functionality), then disconnected it and disabled all the radios, put it in power saving and left it over night without power. Doing that I was able to use it all day yesterday. But while I was full-charging it, after it reached 100%, I noticed that it started acting up almost immediately. The sound was on and kept making the lock screen sound (that's how I noticed it from across the room). So it is tied to the power/lock key. But disconnecting it before it could get out of control mitigated the problem. Last night I was going to try to charge it over night with USB 2.0, but I fell asleep before changing the cable out, so it charged on 3.0 all night and is back in poor repair. I'm currently trying to full charge it while off to see if that gives me functionality again.
Either way, each time I fix it the solution becomes more difficult/timely than the previous one. It's clearly not getting better, so I'm going to have to send it in to repairs.
Sent from my SAMSUNG-SGH-I537
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Sorta sounds like a screen grounding problem. I had a nexus seven with this issue and the charger seemed to really make it act up. Needless to say I gave that to my wife and bought this. If the digitizer is not grounded properly it will act up.
Turning on developer settings and set it to show touches on screen. See if when charging the screen registers more touches than you are doing.
Sent from my SM-T320 using Tapatalk
Re: developer settings; display touches
dottat said:
Sorta sounds like a screen grounding problem. I had a nexus seven with this issue and the charger seemed to really make it act up. Needless to say I gave that to my wife and bought this. If the digitizer is not grounded properly it will act up.
Turning on developer settings and set it to show touches on screen. See if when charging the screen registers more touches than you are doing.
Sent from my SM-T320 using Tapatalk
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Damn! That's an outstanding idea! The only downside is that last night I sent the tablet to Samsung's repair department, so I can't test that out. But once I get it back, if the problem persists I will definitely be doing that first. Thanks for the advice dottat.
Fw:Re: developer settings; display touches
mikegbg said:
Sounds exactly as the same issue I have had the last week. I have done several factory resets triad to avoid installing as many applications as I had prior the factory reset (to see If it was an app causing the issue). No solution yet but I will try your way with kies described above. I have a tab pro 8.4.
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Hey dude, check out dottat's reply. He's got a really good idea that may shed some light on the source of the problem. Unfortunately, I can't try it out. If you do it, let me know how it goes. Maybe you can take some screenshots? Either way, hopefully you can get something out of it.

[Q] Note 8.0 won't start... period. May be hard bricked.

A while back i used to "try" to root stuff. I sucked at it BAD. Anyway, I have a Galaxy Note 8.0 (GT-N5110) that I had rooted to a certain point (very superficial) and I just kept it the way it was, that way I could use Multi-window for any app. This morning I unplug my tab from the charger only to be disappointed that it will not turn on. Ive tried different power outlets, different cables, different base chargers, even the whole "power+vol_up+home" thing... nothing. I never updated the tab when Kitkat came through the pipeline. Im freaking out that a new major update automatically happened overnight or something. Im sorry to trouble you all, but does anyone have suggestions? Since it's rooted I can't take it to Samsung or Best Buy. Honestly if I could just get it back to stock, that would be awesome, but im more concerned about getting it to simply turn on. Any Ideas?
If your device is rooted you won't get an OTA update so that could not be the problem. You can try to unplug battery (mus open the device)"and see what happened. Maybe your battery is faulty or someting else.
K... I appreciate it Ill take a look. But, lets say I actually open it (without making things worse), how do I determine if the battery is in fact faulty? If it is, can I get a replacement? preferably an official samsung one.
EDIT:
Scratch that. Sry, Im just always scared of doin stuff, so I always feel like I have to ask the question, but I'll look it up. Im confident at least this should be easy enough for me to do Thank you again.
The problem with this device is you cannot pull out the battery easily. Maybe after that steps it boots up again.
Battery removal wasn't bad... now I'm just waiting for a new one (ordered on ebay, crossing fingers hoping it was legit). What did you mean "after that steps it boots up agin."? Will the tablet boot up without the battery if it's plugged in or something?
varxtis said:
Battery removal wasn't bad... now I'm just waiting for a new one (ordered on ebay, crossing fingers hoping it was legit). What did you mean "after that steps it boots up agin."? Will the tablet boot up without the battery if it's plugged in or something?
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Wow, that suck. sorry for you man. For now, try to plug the tablet to a computer and while device manager opened and see if there is change. If the change say "qhsusb" or something along that line and not your model number . . . changing battery wont do anything because it's already hard bricked. if not, finger cross.
varxtis said:
What did you mean "after that steps it boots up agin."? Will the tablet boot up without the battery if it's plugged in or something?
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No. But sometimes after this step and reconnecting the battery the device boots up. Also a battery calibration is done.
I tried plugging in the tablet to the computer with the old battery and then without any battery. Neither one prompted anything in the device manager. Today I got the new battery (assuming its legit and in good condition) in the mail. I plugged it in, and nothing. Plugged the tablet with the new battery to the wall charger, nothing. Plugged the tablet with the new battery to the computer while running device manager, nothing.
I'm going assume that the new battery is dead and let it stay connected to the wall charger for 8+ hrs, and see if there are any changes.
I just really don't understand what the deal is and why this would randomly happen. Ive never had problems with the firmware or anything. I have felt like there was an issue with the battery being that it doesn't seem to be keeping much of a charge... but for it to just Hard Brick like this seems so out of the blue. Can anyone provide me with additional suggestions please?
Maybe I'll ask it this way...
Is there any way to test if the batteries are food? That way I can at least determine if the tablet is in fact hard bricked or just bad batteries.
Might not be what you want to hear, but if different cables, chargers and batteries don't work, then maybe there was a power surge overnight while the device was plugged into the wall that took out the device (I once lost a computer that way and now I only use surge suppressors (note that not all power bars are proper surge protectors! See here: http://en.wikipedia.org/wiki/Surge_protector ) that are UL 1449 certified with a low clamping voltage and high energy absorption rating as a minimum; the fancier ones can even tell you if your wall outlet has a grounding problem). Or your tablet's USB port is broken, but that doesn't make sense based on what you've said thus far. Or you're just super-unlucky and all of your replacement parts are also faulty (it could happen). Either way, I've got my fingers crossed for you!
In the meantime, a multimeter would be able to tell if the batteries hold a charge, and whether or not power flows to the device when the battery is attached or the device is plugged into the wall or computer.
Just make sure you read up on how to use one first so you don't accidentally electrocute yourself:
https://learn.sparkfun.com/tutorials/how-to-use-a-multimeter
rtiangha said:
In the meantime, a multimeter would be able to tell if the batteries hold a charge, and whether or not power flows to the device when the battery is attached or the device is plugged into the wall or computer.
Just make sure you read up on how to use one first so you don't accidentally electrocute yourself:
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Click to collapse
Ill definitely be looking into this option in depth tomorrow, and deeply appreciate it. At least it's something. T_T I don't want my tablet going to electro grave. This sucks so bad. This has been a month from hell
First my printer decides its time to start printing crooked over a couple of months, getting so bad that it jams up a few weeks ago, requiring me to get a new printer, which has been a fiasco in and of itself that still hasnt been resolved. Ive gone through 4 printers in one week, all of them different model printers, all from HP, and each and every one of them defective.
Then my laptops video card tweaks out because of installing Splashtop Stream, which starts a domino effect requiring me to do a factory reset on the laptop.
Then my Tablet just decides to kill over.
Then my Microsoft Arc mouse decides it doesn't the want to wheel to work requiring me to purchase a new one, and when I receive it, the cover for the battery compartment is missing and the wheel click is defective. It took 2 and a half weeks to resolve
Then I get bronchitis.
all in less than a month.
Alright, ya... it's dead. Oh well. Here's me trying to make the most of it: are there any places that buy bricked tabs? I figure the parts have to have some sort of salvage value.... maybe.
You can't go to a Samsung service shop? They might not fix it under warranty, but I assume they'll have a look at it and give you an estimation? I feel for you, we all have had these awful weeks... I soft bricked my pad, my computer started to play up, my other computer decided it wanted to die after years of hard work and not skipping a beat, my son got the flu, the missus was on her monthly(grumpy wife..take cover), and when I took a break from it all on the toilet I found that we had run out of paper! To make matters worse, my favorite football team lost from a second division team.. This all happened in one single day! So chin up, it might take a week, but when all it's fixed again you'll experience deep appreciation for the things you have taken for granted.... (xda fixed my tablet, time fixed my wife)
Sent from my GT-N5100 using XDA Free mobile app
Sry for delayed response.
Im very very doubtful that Samsung will help. I have two more... ideas, before I go to Samsung. Non-invasive of coarse, wouldn't want to make matters worse.
K, So first off I took the tablet with extra battery to a tech place in the area that said the batteries are fine, but when they put a multimeter to the motherboard nothing came back. Basically its dead according to them. There's one more shop in the area I want to get a second opinion from. Next, does anyone know anything about an app called "Splashtop Stream"? I'm a fond user of Splashtop to control/view my computer straight my tablet, but when I installed "Splashtop Stream" to use the tablet as an extended screen (not just a cloned second screen), my tablet and both computers I tried it with did NOT like it. I immediately uninstalled it, but it dawned on me that it was just a matter of days later that my Tablet died. I hate to grasp at straws, but if an app like that is too resource intensive, I'm okay with seeing a connection that it fried my tablet. I can't just ask Splashtop "Hey, does your app fry motherboards", so I need a way of researching legitimate known problems. I can't afford a $400 tablet right now.
The reason why I'm using Samsung as a last resort is because it's outside my warranty time, and the moment they know that I did even the simple fast-mod on it, they'll slap it down and won't help. There no custom boot or Roms on it.
With all this said, any suggestions anyone?
misternagoya said:
You can't go to a Samsung service shop? They might not fix it under warranty, but I assume they'll have a look at it and give you an estimation? I feel for you, we all have had these awful weeks... I soft bricked my pad, my computer started to play up, my other computer decided it wanted to die after years of hard work and not skipping a beat, my son got the flu, the missus was on her monthly(grumpy wife..take cover), and when I took a break from it all on the toilet I found that we had run out of paper! To make matters worse, my favorite football team lost from a second division team.. This all happened in one single day! So chin up, it might take a week, but when all it's fixed again you'll experience deep appreciation for the things you have taken for granted.... (xda fixed my tablet, time fixed my wife)
Sent from my GT-N5100 using XDA Free mobile app
Click to expand...
Click to collapse
O_O That does suck!! Sry man.
varxtis said:
Sry for delayed response.
Im very very doubtful that Samsung will help. I have two more... ideas, before I go to Samsung. Non-invasive of coarse, wouldn't want to make matters worse.
K, So first off I took the tablet with extra battery to a tech place in the area that said the batteries are fine, but when they put a multimeter to the motherboard nothing came back. Basically its dead according to them. There's one more shop in the area I want to get a second opinion from. Next, does anyone know anything about an app called "Splashtop Stream"? I'm a fond user of Splashtop to control/view my computer straight my tablet, but when I installed "Splashtop Stream" to use the tablet as an extended screen (not just a cloned second screen), my tablet and both computers I tried it with did NOT like it. I immediately uninstalled it, but it dawned on me that it was just a matter of days later that my Tablet died. I hate to grasp at straws, but if an app like that is too resource intensive, I'm okay with seeing a connection that it fried my tablet. I can't just ask Splashtop "Hey, does your app fry motherboards", so I need a way of researching legitimate known problems. I can't afford a $400 tablet right now.
The reason why I'm using Samsung as a last resort is because it's outside my warranty time, and the moment they know that I did even the simple fast-mod on it, they'll slap it down and won't help. There no custom boot or Roms on it.
With all this said, any suggestions anyone?
Click to expand...
Click to collapse
I randomly bumped here and I'm no expert, but if your tablet's motherboard is indeed dead, I believe there is absolutely no way they can tell that the device got rooted at some point. You did not "hard brick" it, that's a whole other thing, or at least so I've learned in my not-very-long experience. "Hard brick" should be the result of flashing a kernel made some other device, which definitely is not your case. Moreover, that does not kill the motherboard, it just makes anything unbootable: it's a software problem, so it can actually be detected. You had a hardware failure that most likely completely wiped any proof that you have ever modified your device, so the only problem that you might have, I think, is them telling you that they take no responsibility for what your power outlet has done to the device, but they shouldn't be able to detect any modification that you have made. In my opinion technical support is worth trying.
Awesome!! Thank you so much!
varxtis said:
Awesome!! Thank you so much!
Click to expand...
Click to collapse
You're welcome, good luck!
Just thought Id let everyone know that I managed to get Samsung to compromise on the matter since the Tablet is only 5 months past warranty (1yr 5mnths since purchase). So, not much longer and hopefully Ill have a tablet that works yet again.

tab gets flickering screen and reboots

I dropped by tablet battery down once and now every so often the screen flickers with vertical lines and this is followed by loss of network and the thing reboots.
I've read this to be a battery problem.
Warranty is still active but I've rooted it and my Knox counter has gone up.
What do you think XDA? Just get a replacement battery?
NightShadow02 said:
I dropped by tablet battery down once and now every so often the screen flickers with vertical lines and this is followed by loss of network and the thing reboots.
I've read this to be a battery problem.
Warranty is still active but I've rooted it and my Knox counter has gone up.
What do you think XDA? Just get a replacement battery?
Click to expand...
Click to collapse
If you have the ability, since it was dropped, I would open it and make sure connection is tight to battery and screen. Then if it still acts up, get a battery. Several people had battery issues out of the box. All it turned out to be for a few was a loose connection.
i was thinking about that but i'm afraid of voiding warranty. do i even still have warranty? due to the knox?
flhthemi said:
If you have the ability, since it was dropped, I would open it and make sure connection is tight to battery and screen. Then if it still acts up, get a battery. Several people had battery issues out of the box. All it turned out to be for a few was a loose connection.
Click to expand...
Click to collapse
Well ive opened it up and tightened everything i can see and it seems to work ok for a while, when the charge gets to around 20-30%, the tablet flickers, all mobile connections are lost and 75% of the time, reboots.
So i went ahead and got a new battery. Now this was worse kinda. At random moments, like unlocking the screen, or replying to a message, or maybe just a high cpu load event, the tablet just turns off and is unable to be powered back on without first connecting it to a power supply like a wall charger or a power bank.
The time and date will be reset once its back on and ill have to wait a few minutes before the auto network time setting kicks in before i can use something like whatsapp.
Anyone got any clue what might be causing this problem? Thanks in advance, helpful xdarians.
NightShadow02 said:
Well ive opened it up and tightened everything i can see and it seems to work ok for a while, when the charge gets to around 20-30%, the tablet flickers, all mobile connections are lost and 75% of the time, reboots.
So i went ahead and got a new battery. Now this was worse kinda. At random moments, like unlocking the screen, or replying to a message, or maybe just a high cpu load event, the tablet just turns off and is unable to be powered back on without first connecting it to a power supply like a wall charger or a power bank.
The time and date will be reset once its back on and ill have to wait a few minutes before the auto network time setting kicks in before i can use something like whatsapp.
Anyone got any clue what might be causing this problem? Thanks in advance, helpful xdarians.
Click to expand...
Click to collapse
I'm not by any means an expert or repairman of any kind, just so you know. I'm thinking maybe a loose connection at the terminals on the board the battery connects to or if they use a separate board for the battery to connect to and then to the main board it may be somewhere along in there. Maybe a loose wire going into the tab that connects to the prongs. It sure sounds like something isn't making a good connection. Sounds like a load gets put on it and it and that bad connection can't handle the load.
Might just be you're going to have to send it off...
You may be right. Sounds like a particular connection which does higher load or something. Once i put the tablet in power save mode, the symptoms never reappeared. I dont notice a drastic slowdown in the tablet either. Probably am prolonging the inevitable.
Same Symptoms
NightShadow02 said:
You may be right. Sounds like a particular connection which does higher load or something. Once i put the tablet in power save mode, the symptoms never reappeared. I dont notice a drastic slowdown in the tablet either. Probably am prolonging the inevitable.
Click to expand...
Click to collapse
I am facing exactly same issue what you have described and am in same situation, have tripped Knox on my Tab S 8.4.
I can see that you have been able to suppress the behavior by putting it to Power Saving mode. Have you experienced flicker and reboot since then? I am planning to take it to Samsung store not sure if they will honor warranty, did you tried that?
misrasandeep said:
I am facing exactly same issue what you have described and am in same situation, have tripped Knox on my Tab S 8.4.
I can see that you have been able to suppress the behavior by putting it to Power Saving mode. Have you experienced flicker and reboot since then? I am planning to take it to Samsung store not sure if they will honor warranty, did you tried that?
Click to expand...
Click to collapse
nope, ever since the Power Saving mode solution, it hasnt flickered and rebooted yet. and my warranty was expired by that point so i didnt bring it to the shop. no noticable reduction in performance so far
possible battery connector
NightShadow02 said:
Well ive opened it up and tightened everything i can see and it seems to work ok for a while, when the charge gets to around 20-30%, the tablet flickers, all mobile connections are lost and 75% of the time, reboots.
So i went ahead and got a new battery. Now this was worse kinda. At random moments, like unlocking the screen, or replying to a message, or maybe just a high cpu load event, the tablet just turns off and is unable to be powered back on without first connecting it to a power supply like a wall charger or a power bank.
The time and date will be reset once its back on and ill have to wait a few minutes before the auto network time setting kicks in before i can use something like whatsapp.
Anyone got any clue what might be causing this problem? Thanks in advance, helpful xdarians.
Click to expand...
Click to collapse
I have seen this problems on 2 tablets 10.5 and 8.4 the connector where battery is connected on motherboard gets loose which causes reboots and flicker
Solution in my case was resoldering that connector again
i had the same problem, opened up my tablet, just disconnected the battery, cleaned the contacts, pushed it back, made sure its nice and snug, put it all back together and now battery doesn't drain as fast, no more flickers and reboots!
hmm. i'll have to give it a try. you think this may be something to do with condensation?
Sorry for the bump, but I'm having this issue as well on my S 8.4. Custom ROM. The thing with me is that it's not consistent. One day, it will do it a few times; others, no issues whatsoever. I'll try the suggested if it gets progressively worse.
Hey guys,
Unfortunately our home's tablet (Tab s 8.4 Wifi) has the same problem.
It never did weird whatshowever, but when I flashed a custom rom (which went perfectly smooth actually) the screen flashes and the tablet reboots sometimes.
Now it weird that this never happened before and only when I flashed a custom rom it began showing this behaviour.
I am affraid of opening this tablet, and I guess because of the custom rom there is no warranty left anymore (or can this be bypassed by some terminal trick?)
Also I question myself if this is not a software issue, and that it can be fixed with software or so?
Thanks for answering!
My Fix
Hey Guys!
I might have some surprising news to tell about this "issue".
I saw some unboxing video's and saw at what place the battery connector was placed. It was some sort of a 'push to click' system.
So what I did was the following:
I pushed the tablet at the place of the battery connector. I tried this at various places until I heard a *click*.
Now I don't have this issue anymore. Jay!
I hope this will help you too!
I started to have the same issue on a Tab Pro 12.2, presumably after the battery has lost considerable amount of its energy. Normally I remember this tablet to have a dazzling 10+ hours of usage time. Just after some serious usage time of more than 2 years this issue started, along with increasing temperature and finally reboot. From time to time Android gave a warning message about overheating. From time to time charge values drop big values at a time. From 45 to 20 or 80 to 50. Seems arbitrary. This was happening even when I was on stock, then I switched to some Android 6 stock port from some other tablet. Still the same.
I believe the battery needs replacement. (That's obvious after 18 months, I just mean blinking is related to this) Hope I can find a high quality one cause there are several garbage batteries.

[Solved] Battery and random reboots

Hi
I have a problem with my G3. When i start it, it shows lg logo then few it reboots again without getting anywhere. But if i put the charger it does work flawlessly. If i take off the charger, few seconds and it reboots. Is it a battery issue? Software or hardware?
Thanks
Yes, its battery problem. I think its time for you to change the battery.
Regards
Faisal
solidchips said:
Yes, its battery problem. I think its time for you to change the battery.
Regards
Faisal
Click to expand...
Click to collapse
Yes, it is a battery a problem, so i bought a 2nd and a 3rd but the same problem happened with the 2nd in less than a month, the 3rd in 2 weeks.
I wasn't ready to buy a 4th one so i looked around and i found a solution and it's working for me so far without a problem.
the solution isn't mine so all credits goes to Marko Peltonen in Android Central forums.
He explained the problem here
And the solution with pictures here
Some remarks to take in consideration:
the wire should be thin (from a strand);
when you're manipulating the wire be careful not to let it touch the body of the battery (if you peeled the plastic off the battery) when it's connected to the + connector.
the soldering point on top of the control board should be as thin as possible so you can put back the plastic cover
hope you can solve this frustrating problem
sharp3r said:
Yes, it is a battery a problem, so i bought a 2nd and a 3rd but the same problem happened with the 2nd in less than a month, the 3rd in 2 weeks.
I wasn't ready to buy a 4th one so i looked around and i found a solution and it's working for me so far without a problem.
the solution isn't mine so all credits goes to Marko Peltonen in Android Central forums.
He explained the problem here
And the solution with pictures here
Some remarks to take in consideration:
the wire should be thin (from a strand);
when you're manipulating the wire be careful not to let it touch the body of the battery (if you peeled the plastic off the battery) when it's connected to the + connector.
the soldering point on top of the control board should be as thin as possible so you can put back the plastic cover
hope you can solve this frustrating problem
Click to expand...
Click to collapse
I have the same issue. But mine does only restart if it goes to sleep mode. Mostly 1-2 minutes after screen lock. Could it be the same issue.
tryunus said:
I have the same issue. But mine does only restart if it goes to sleep mode. Mostly 1-2 minutes after screen lock. Could it be the same issue.
Click to expand...
Click to collapse
It could be a software problem. don't go hardware at 1st. What's your configuration (ROM, kernel, Recovery)?
sharp3r said:
It could be a software problem. don't go hardware at 1st. What's your configuration (ROM, kernel, Recovery)?
Click to expand...
Click to collapse
Everything stock. Flashed MM stock firmware a few days ago.
While it was flashing the lg flash tool crashed on my pc at %70 or so. Phone did a reboot automatically and booted up.
Then the phone started to shut down and restart automatically while it was in sleep mode.
Then i flashed stock mm again. This time it worked. But the phone keeps restarting. It does only restart while the screen is locked. If i double tap or use the power button to unlock the phone nothing happens and the screen keeps black and then the LG logo appears and phone boots up.
Tried different custom kernels, recoverys and rom. Issue is still there. Thats why im thinking its and hardware issue and battery is faulty.
Sorry for bad english
@sakarya making this step properly won't harm you G3 in any way, it'll enhance the power connection because the connection is made by glue and with high temperature it becomes faulty, so yes you can give it a try but before going that far if your not familiar with soldering i recommend you to download and flash a stock firmware from here then go to this page and download the proper firmware you need. since you have this problem when the screen is off, in my case it was random.
You'll find here a guide on how to flash a KBZ properly.
Good luck
sharp3r said:
@sakarya making this step properly won't harm you G3 in any way, it'll enhance the power connection because the connection is made by glue and with high temperature it becomes faulty, so yes you can give it a try but before going that far if your not familiar with soldering i recommend you to download and flash a stock firmware from here then go to this page and download the proper firmware you need. since you have this problem when the screen is off, in my case it was random.
You'll find here a guide on how to flash a KBZ properly.
Good luck
Click to expand...
Click to collapse
Thank you. I will try this.. Bought yesterday a new battery, problem does still exist. Must be a software issue.
Paper trick wont work for everyone. Solder or use a bit of foil and paper for pressure.. I prefer to use a bit of tape as it is a cleaner solution. Batter life seems to fall a bit, just a tad after this mod tho but no reboots fixed 3 out of 3 batteries like this.
The chinese batteries run down quicky.
The anker batteries that also have the reboot issue can be fixed by using the board from the chinese on it fix 1 out of 1 anker this way

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