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So I woke up this morning to find my Tab drained. I plugged it in for half an hour, then when I picked it up I noticed there was no charging indicator (the green liquid battery thing). So I thought maybe I didn't plug it in right. I reattached everything, tested the charger on another device, then plugged it back into the tab for about 2 hours...still no juice. I tried powering on and doing the reset thing. still nothing. I brought it to a Samsung service center and they said I have a faulty motherboard. Now I'm wondering how the hell that happened when I've been using this device for about 6 months (only 6 months) without any issues, no overheating or strange reboots or anything, and now just like that I have a motherboard issue? The kicker here is that they're charging 75% of the tablet price to fix it! What gives?! I purchased it from a non-samsung mall store so they said I can't claim warranty. I popped the back off and did the battery pull thing and tried to charge - still nothing. Did I buy a device that decided it was a lemon after 6 months light-moderate use?
Anyone else have this happen? It's never been dropped or anything and I was on stock firmware with nothing but root.
In the UK, If your tablet goes faulty in 12months your guarantee is with the place you bought it from, not Samsung.
John.
It's ALIVE! I thought I'd get a 2nd opinion on my Tab since the guys at the Samsung service center popped it open anyway. Went to a generic phone repair store, all they did was hook it up to this box thing, and it came back to life! The guy said something got corrupted and just re flashed everything to stock rooted. He charged me less than $20 and I have a working Tab again. Obviously the very first thing I did with my resurrected device was to call Samsung's hotline and report how this one service center was trying to scam me into buying a motherboard that cost nearly as much as what I paid for the thing brand new.
Some li-poly battery have an protection circuit built in, if the voltage falls below a certain level say 2.5volts per cell, it disables the battery, if you connect an meter to the battery you will get 0volts , you need an li-ion charger that passes an higher voltage that resets the battery and allows it to work again, I wonder if this is what happened.
http://batteryuniversity.com/learn/article/low_voltage_cut_off
John.
Did they connect via USB or to the motherboard?
@tinderbox could be...must have over-drained itself for some reason.
@ashyx I couldn't really see what he was doing since his work table was obstructed by a bunch of stuff and he had his back towards me, I just saw him grab this small black box, then minutes later he showed me that the tab was already powering on though couldn't get past samsung logo, then he went ahead and flashed to stock.
Reason I ask is I wonder if he used a jtag box to ressurect it by reflashing the bootloader.
If he did there must be jtag points on the board as it can't usually be done via USB.
Pity you didn't ask what he actually did as I'm intrigued now.
Did the box look like this: riff box
ashyx said:
Reason I ask is I wonder if he used a jtag box to ressurect it by reflashing the bootloader.
If he did there must be jtag points on the board as it can't usually be done via USB.
Pity you didn't ask what he actually did as I'm intrigued now.
Did the box look like this: riff box
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Yes! but without the markings.:good:
pawces said:
Yes! but without the markings.:good:
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Exactly the same or just similar?
yeah i think so... it had similar ports, though not sure about the outer shell of it... i think it was smooth all around with no ridges or anything, just a little black rectangular box.
Sorry to revive an old topic, but i thought i'd do an update instead of start a new one. Tab S died again and I'm now convinced it's over-discharge, as I left it at about 20% and forgot to plug it in before going to bed. Woke up with the tab drained, not responding to any button combinations, not charging with any of my chargers that tested ok with other devices.
Instead of bringing it back to the technician, I thought I'd try mcguyvering the damn thing. I opened up the back, pried the battery terminals up off the board, lifted the battery out, and with a spliced USB cord hooked up to a powerbank, I gave the battery terminals a direct zap, inserting the exposed USB wires into the battery terminals. This took some trial and error as, I didn't know which wire was supposed to go where, but finally I saw the powerbank leds blink, indicating it was discharging into something. I held the wires in place for about 5-10 minutes, noticing some heat on the battery by then. I reinstalled the battery back into the tablet, closed everything up and tried charging again and...hey presto! the tab started charging. :victory: Let it charge for 2 hours and powered on like nothing happened.
disclaimer:
I don't recommend you defibrillate your device's battery unless you know exactly what you're doing and are fully aware of the risks. (I didn't know what I was doing at the time but I was so frustrated at that point I didn't mind if the battery blew up in my face.)
Mine just dead last night while CHARGING (turned off at 13%).....
And refused to turn on till now (still charging and both warm (charger + tab)...
I even plugged an ampere meter to really know if its drawing any or not (it is, at 5.2V 1.7A for 15mins)...
And still no luck
Samsung's device become more ****ty each generations..... Esp the battery...
This one is the replacement batt they gave me after 2mos of usage for infamous Tab S battery issue...
I saw a video on youtube, a guy had a dead 10.5" T1 he took the back off and connected an 1amp microusb charger pcb to connections directly to the battery under a piece a tape, I bought a couple of the microusb charger pcb`s from ebay for 0.42p each in case mine goes dead.
EDIT: I found the video.
https://www.youtube.com/watch?v=BRTgLGrzNz0
John.
pawces said:
Sorry to revive an old topic, but i thought i'd do an update instead of start a new one. Tab S died again and I'm now convinced it's over-discharge, as I left it at about 20% and forgot to plug it in before going to bed. Woke up with the tab drained, not responding to any button combinations, not charging with any of my chargers that tested ok with other devices.
Instead of bringing it back to the technician, I thought I'd try mcguyvering the damn thing. I opened up the back, pried the battery terminals up off the board, lifted the battery out, and with a spliced USB cord hooked up to a powerbank, I gave the battery terminals a direct zap, inserting the exposed USB wires into the battery terminals. This took some trial and error as, I didn't know which wire was supposed to go where, but finally I saw the powerbank leds blink, indicating it was discharging into something. I held the wires in place for about 5-10 minutes, noticing some heat on the battery by then. I reinstalled the battery back into the tablet, closed everything up and tried charging again and...hey presto! the tab started charging. :victory: Let it charge for 2 hours and powered on like nothing happened.
disclaimer:
I don't recommend you defibrillate your device's battery unless you know exactly what you're doing and are fully aware of the risks. (I didn't know what I was doing at the time but I was so frustrated at that point I didn't mind if the battery blew up in my face.)
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Crescendo Xenomorph said:
And still no luck
Samsung's device become more ****ty each generations..... Esp the battery...
This one is the replacement batt they gave me after 2mos of usage for infamous Tab S battery issue...
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Samsung tablets only have issue with battery connectors. The white connector with 6 wires has loose connection, the black connector soldered to mainboard has cracked solder joints. New battery won't solve problem if you don't fix these two flaws. Resolder the battery connector will fix most of problems: not charging, reboot, flickering, auto shutdown.
I posted more details in the threat: flickering screen.
so the problem is Samdung's QC....
anyway no more somedung, I switched to Xiaomi Mi Mix, still preordering from China.....
You have to watch these chinies owened tablet and phone manufactues, they have been found to come with built in spyware, sending copys of all your texts ect back to china, it`s been in the news that last few day`s
Lenovo notebooks had a spyware app and Lenovo had to issue insturctions on hot to remove it once it was found.
John.
Crescendo Xenomorph said:
so the problem is Samdung's QC....
anyway no more somedung, I switched to Xiaomi Mi Mix, still preordering from China.....
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That's OK, I can scan and remove all those spyware.
Still its better to have it properly supported with actual updates (older phone still got all UI + android update, hello MIUI 8).
Rather than using phone without proper software support....
Tab S - buggy and prolly the last MM update
Note 3 - useless LL update, very unstable, consider alpha
Note 8.0 - buggy last KK update, switched to CM13 and happy with it
My Tab S 10.5 is all of a sudden not charging. I have it set to make a sound when plugged in and every ten seconds or so it makes the sound and the charge indicator goes on and off. I'm not touching it at all. It's like it is constantly connecting and disconnecting by itself.
I turn it off and try to charge it when off. Every few seconds the screen turns on with the battery charge picture. It's using more power doing that than it is getting from the charge. I finally have to unplug it to save what battery i have left.
I'm using the Samsung usb cable and charger but I've tried different cable and charger with same result. Do I have a bad usb port? It seems so. I have to wiggle the plug a little at times make charge indicator comes on. But as I said, it's going on and off without me touching it.
It's the weekend so I can't call Samsung. I hope it's covered by warranty.
I have never heard of an S1 owner with an bad microusb port (you could be the first) though i would blame the battery first until proven wrong as it`s way more common, just wait till Monday and get it repaired or replaced.
John.
Oh shoot I just checked my receipt. Bought 11/30/14. Any one has experience with Samsung on product just out of warranty?
It depends on the country you bought it in, also how you bought it, credit cards often get you a second year of protection.
In Europe you can have a 2 year warranty, in the uk you can claim for up to 6 years supposedly.
If it`s the battery you can buy them on ebay for £10 and youtube has a guide on replacing them, I am not cetrain of the microusb ports is a separate module or if you need to replace the motherboard.
EDIT: it looks like the microusb is removable see 2m20s on the video below.
https://www.replacebase.co.uk/samsu...nt-micro-usb-charging-port-and-micro-sd-card/
John.
https://www.youtube.com/watch?v=hm2_AUS_ZpM
Thank you very much. I'll buy the part and maybe I can get a local shop to replace it for me. I'm disabled so I'm hopeless with this kind of repair.
Hi everyone! Sorry for my poor english but I need help. I know that maybe there is solution inside the forum but I can't find it (blind!). So...few weeks ago I noticed that tablet's energy suddenly went down from about 30% -> 0% (and it happened after each charching) . Before this situation I was able to work on 1% (with dimming of course) for quite long time... So a week ago after connecting charger I saw on the screen a charching logo but there was now effect (You know - the green battery). I connected tablet to AC charger and to USB port on my PC there was no effect. When I tried to switch on - tablet starts and after booting showed 0% of charge and ****ched of. So... I took back cover and disconnected battery for few houres...and without USB charging tablet starts and showed 6% of battery then went o 5% (dimming) and it happends again and again. So my question is: Anybody knows if changing the old battery for a new one (replacement) about 30$ will solve this situation? Thank you in advance for your replies
Battery and charging port will fix this. Only mention charching port because its cheap and easy to replace while swapping batteries
Ok! So now I have to look also for a charging port . I'll do it. Thank you for advice!
I had the same issue. I sent the tablet to a service center. They said the charging port was gone, and the battery is weak too (after 3 years of heavy use). Both replaced for $69 (including tax). The battery is OEM, much better than cheap Chinese ones on eBay.
Before flexible-homebutton-softkeys-charger port part replacement :
1. Battery already swollen
2. Home button unresponsive most of the time
After flexible-homebutton-softkeys-charger port part replacement :
1.home button still unresponsive most of the time
2. Charging the phone only reach 15% max, then it goes down to 14%, then goes up to 15% again in infinite cycle
3. Had to use external battery charger in order to get the battery charged to 100%
Which part in my e988 is the real source of this problem ?
Paleskin said:
Before flexible-homebutton-softkeys-charger port part replacement :
1. Battery already swollen
2. Home button unresponsive most of the time
After flexible-homebutton-softkeys-charger port part replacement :
1.home button still unresponsive most of the time
2. Charging the phone only reach 15% max, then it goes down to 14%, then goes up to 15% again in infinite cycle
3. Had to use external battery charger in order to get the battery charged to 100%
Which part in my e988 is the real source of this problem ?
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I had similar home-button issues with Galaxy R after DIY screen assembly replacement. Can be button having bad physical contact with board (manifested by dropped button, short clicks, hard button or even too soft button; button has to be in level with front panel glass and has to be soft-ish, but shouldn't get stuck or too hard to press), can be board's bad connection with motherboard - check that micro connector, it maybe didn't fit properly or there is possibly some dust in it (this was my issue with Galaxy R).
Battery one is probably connected multiple factors, including broken battery, because I think that charging electronics in E988 won't allow charging of broken batteries on high currents - mine didn't even want to start with broken or replacement batteries without temperature sensor (so had no luck finding good replacements - funny enough, friend with F240K could use all of those). Capacity reading can be also false (but if battery is charging with powerbank, but not with charger, small chances for that) - you may want to check what dmesg reports - it gives constant battery percentage and voltage updates during charging, and also check Ampere measurements while on charger to make sure device actually has some juice coming in.
Last idea was from experience, I've connected mine (while it's pot was 100% functional) to a friends cable, device charged up to some percent (maybe 20%), and started playing same game due to really low charging current it was getting from that cable. Back then I didn't have Ampere, but I was accustomed to things like that from the begging, when my brand-new E988 didn't want to charge on Samsung and Nokia cables Had to trade some really nice and long Nokia cable for crappy LG's one longer than 50cm because of that...
P.S. How did you get that part all in one? Isn't home button/softkeys one assembly, and USB/OTG/MHL/Charging another? Or my old E988 somehow differs from yours. I'm looking for charger assembly because I gave my phone to a family member who asked for it and knew about a problem, and they are already whining how "it works only with one cable and I can't use phone while it's charging!"
ShadySquirrel said:
I had similar home-button issues with Galaxy R after DIY screen assembly replacement. Can be button having bad physical contact with board (manifested by dropped button, short clicks, hard button or even too soft button; button has to be in level with front panel glass and has to be soft-ish, but shouldn't get stuck or too hard to press), can be board's bad connection with motherboard - check that micro connector, it maybe didn't fit properly or there is possibly some dust in it (this was my issue with Galaxy R).
Battery one is probably connected multiple factors, including broken battery, because I think that charging electronics in E988 won't allow charging of broken batteries on high currents - mine didn't even want to start with broken or replacement batteries without temperature sensor (so had no luck finding good replacements - funny enough, friend with F240K could use all of those). Capacity reading can be also false (but if battery is charging with powerbank, but not with charger, small chances for that) - you may want to check what dmesg reports - it gives constant battery percentage and voltage updates during charging, and also check Ampere measurements while on charger to make sure device actually has some juice coming in.
Last idea was from experience, I've connected mine (while it's pot was 100% functional) to a friends cable, device charged up to some percent (maybe 20%), and started playing same game due to really low charging current it was getting from that cable. Back then I didn't have Ampere, but I was accustomed to things like that from the begging, when my brand-new E988 didn't want to charge on Samsung and Nokia cables Had to trade some really nice and long Nokia cable for crappy LG's one longer than 50cm because of that...
P.S. How did you get that part all in one? Isn't home button/softkeys one assembly, and USB/OTG/MHL/Charging another? Or my old E988 somehow differs from yours. I'm looking for charger assembly because I gave my phone to a family member who asked for it and knew about a problem, and they are already whining how "it works only with one cable and I can't use phone while it's charging!"
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This is the part, which I bought online
Yet, it still doesnt fix the problem, is it possible that the IC chip on the board is the real culprit ?
Paleskin said:
This is the part, which I bought online
Yet, it still doesnt fix the problem, is it possible that the IC chip on the board is the real culprit ?
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I'm pretty sure my USB board looks like one from the attachment, without all that plastics around... I may be wrong, though, it was long time ago I've opened my device, and I can't really grab it now and open to check out.
As for the IC, chances for that are small. Have you tried charging with other cable/charger pair? If buttons aren't working you can always use on-screen ones, but port is a greater issue.
ShadySquirrel said:
I'm pretty sure my USB board looks like one from the attachment, without all that plastics around... I may be wrong, though, it was long time ago I've opened my device, and I can't really grab it now and open to check out.
As for the IC, chances for that are small. Have you tried charging with other cable/charger pair? If buttons aren't working you can always use on-screen ones, but port is a greater issue.
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That plastics are the softkeys, and in the middle are the home button and micro usb port
Tried many cables, all give the same result
2 weeks ago i tried something stupid. I made a USB charger for my scooter from an old navigation charge brick for te car. without thinking i plugged in my phone and *poof* off. I thought it was strange because it has a limit of 5v and a fuse of 2a, so i thought it was within the safe area. I started my phone again, but when i wanted to charge it, it was really slow. (200 ~ 400ma). So i thought i fried my USB port, and ordered a new one. I replaced it but the charging problem still appeared. So i thought maybe its the battery, same story. ordered a new one but the problem was still there.
So i tried to re calibrate the battery by discharging it to 0 and let it fully charge while off. When the phone went of it didn't detect any charging and wouldn't boot. When i measured the voltage of the battery it discharged to 2.7V, i externally charged it to 3.2V and my phone booted again.
a friend advised me to return to the stock miui version and firmware version from when it came out of the box. So i did butt it didn't help me solve the problem. My phone think he is fast charging but the current is around 200 to 400ma and above 50 percent its at 50 to 120ma.
The last few days i am trying to find the schematics of the phone and especially the power circuit, i can find a few pictures, and there are a few sites that offer the schematics. But i cant seem to find out to download them from there.
Is there anyone who knows where i could find the right schamtics, or point me in a direction where the problem/defect is coming from?
Use original charger and cable?
Yes i did actually tried 5 different charges and 5 cables, a car charger, powerbank. I found the schematics yesterday and found out where the IC is located what may cause this problem. But i can only order it in china so i have to wait 2 3 weeks.