My T800: Your device is overheating. - Galaxy Tab S Q&A, Help & Troubleshooting

I have been browsing the web when suddenly my apps shut down and I got this message. This happened twice. What's going on?

Here are some screenshots

Maybe find the offending app?
Try booting in safe mode.

The same thing happens in safe mode. I suspect it has more to do with the fact that I recently opened the back cover to replace the USB connector and left speaker. Maybe I have disturbed contacts or some cooling components on the mainboard.

Akopps said:
The same thing happens in safe mode. I suspect it has more to do with the fact that I recently opened the back cover to replace the USB connector and left speaker. Maybe I have disturbed contacts or some cooling components on the mainboard.
Click to expand...
Click to collapse
Did you disturb the heat sink on the cpu?If you did you will need some heat sink compound to mount it properly to the heat sink.

I run geekbench with the cover open and as the tablet was heating up I touched the backs of all mainboard parts and it appears that the part that gets hot is where the USB charger cable plugs into it. So I am guessing that this is related to the incident when I apparently "fried" the USB charger by plugging it into a malfunctioning USB hub. I changed the USB charger and its connector, but I guess this did not help.
I could change the mainboard if I could find one cheap. Gosh, those things are expensive. I see vendors selling them on ebay for well above 100USD, a surprising price for a three year old, used part. Those that are cheaper are sold already defective. For comparison, the mainboards of Samsung Galaxy S5 phone, which was a 2014 device of comparable performance are sold for just 30 bucks.

Akopps said:
I run geekbench with the cover open and as the tablet was heating up I touched the backs of all mainboard parts and it appears that the part that gets hot is where the USB charger cable plugs into it. So I am guessing that this is related to the incident when I apparently "fried" the USB charger by plugging it into a malfunctioning USB hub. I changed the USB charger and its connector, but I guess this did not help.
I could change the mainboard if I could find one cheap. Gosh, those things are expensive. I see vendors selling them on ebay for well above 100USD, a surprising price for a three year old, used part. Those that are cheaper are sold already defective. For comparison, the mainboards of Samsung Galaxy S5 phone, which was a 2014 device of comparable performance are sold for just 30 bucks.
Click to expand...
Click to collapse
try to resolder the USB connector, if there is bad joint, that could cause a larger than expected resistance on the 5v or 0v return, this will act as a heating element at the solder joint.
In normal operation there can be up to 2A flowing through that connector, it will heat +10 degree even when functioning correctly, any extra resistance at that point is dangerous since its almost maxed out on thermal dissapation anyway.

Akopps said:
I run geekbench with the cover open and as the tablet was heating up I touched the backs of all mainboard parts and it appears that the part that gets hot is where the USB charger cable plugs into it. So I am guessing that this is related to the incident when I apparently "fried" the USB charger by plugging it into a malfunctioning USB hub. I changed the USB charger and its connector, but I guess this did not help.
I could change the mainboard if I could find one cheap. Gosh, those things are expensive. I see vendors selling them on ebay for well above 100USD, a surprising price for a three year old, used part. Those that are cheaper are sold already defective. For comparison, the mainboards of Samsung Galaxy S5 phone, which was a 2014 device of comparable performance are sold for just 30 bucks.
Click to expand...
Click to collapse
Actually there's no need to change mainboard. This is a common problem of Samsung tablets when battery connector has cracked solder joints.
This is an example
Anyone knows how to solder can do it within 5 minutes
This is an example for a Tab 3, but similar to any Samsung tablets, most use the same battery connector
I fix mine and other tablets having problem of quick discharge, charging or overheating just by resolder the battery connector.

I just picked up an allegedly working T800 with 32GB board (!!) and a cracked screen for only 89 bucks on ebay. Considering my mad soldering skillz, I probably would need to have a backup board anyways, plus I could use this tablet for other spare parts, like the battery. The attachment shows precisely the area that seems to get hot to touch.

so would 50c for the cpu and battery be normal for this tablet? (was running a game)

?my was boost on 1600Mhz 81°C all the time

Related

[Q] Original usb cable is loose. Whats your take?

My charger doesnt fit well and i just came to terms with this but it has got worse the last two weeks. It plugs in and the led lights up but it doesnt charge sometimes, it says it is charging but an hour later and the battery goes down 5% ish. Also it only connects when the phone sits face up and the cord hangs down as in it must sit on the edge of the table for it to charge. I tried my friends Droid cord and it was a snug fit. do i have an insurance claim on my hands?
You can try getting the cable swapped, but honestly I think the amount of hassle you would go through would just not be worth it. If the problem was with your phone then I would 100% definitely get the phone replaced, but if the problem is only with the cable, I'd take the path of least resistance and just buy a new cable out of pocket. They really aren't expensive if you know the right place to get them.
I use this cable here with my Aria and it works great: http://www.monoprice.com/products/p...=10303&cs_id=1030307&p_id=5458&seq=1&format=2
It is only $3.13 shipped (to my address), and it's 2 feet longer than the original cable which I like because I thought the original one was too short. Never had a problem with it charging my Aria. I know it seems too good to be true, but the quality really is just as good as a $20+ cable you'd find at a local store.
I ran into the same problem with an Aria I bought off of Craigslist. It would kind of charge at first, then it gave up altogether. I found that the end that plugged into the phone had been slightly squished by the previous owner. I just went to Staples and bought a Staples branded MicroUSB cable, it's six feet long and works fine. Granted, it wasn't ebay-cheap but I got the problem handled same day, no screwing around. The nice thing about this cable is it's just as flexible as the original, unlike the MicroUSB charge/sync cables that come with Blackberry phones and the extra length makes it a little more versatile.
Don't mean to resurrect an old thread, but I didn't want to start a new one.
My connection is getting worse every day. It is very aggravating. I'll plug in at night time and wake up to find my phone didn't charge at all. I have to put the cable in at a slight angle to get it to connect.
Using adb and just any file transfer on the computer is almost impossible.
I use the original cable, and sometimes my brother's Captivate cable--both are just as bad.
And the AT&T car charger is a joke. So I think it is the phone, not the cables.
i find that the motorola(backflip) usb doesnt fit snug(still charges & transfers fine, a little slower)
May be just a bit too rough with this little phone
Finally had enough of the cable problem, so I decided to figure out whats wrong. Turns out, I ended up pulling out about a cubic centimeter of dust and lint from in the port (way down in there, a quick glance and it didn't look as bad as it really was.)
Works like a charm, now!
Brivette, glad to see you fixed your issue!
For future reference,
The MicroUSB cable that has become the new standard contains 2 prongs on the end of it. This prong is responsible for ensuring it stays locked into the connector.
The newer MicroB connector is rated at a higher use cycle than the old MiniB type, which is why current devices are moving to it as a standard. It is also designed so that the cheaper cable will bear the wear and damage, rather than the device. The usual culprit is the two latch pins at the top of the male connector which tend to wear and bend eventually causing the cord to become "flaky" or fickle (for a lack of a better term). This is usually the cause of most people's woes. However often times the connections from inside the cable may wear and short out, causing the cord to become dysfunctional. Before sending your phone in for a replacement, I highly recommend trying a second cable.
If changing the cord doesn't work, the problem most likely lies with the phone. While it is possible that the PCB mount has come disconnected from the board, it is more often than not likely that the port has become clogged with debris. So before sending your phone in for service, check the port and ensure that the port is clear and clean of obstruction.
This also goes for charging or data transfer. Sometimes issues with data transfer can arise out of a bad cable. This often happens when people wrap their cord too tightly or kink it, which causes signal interference. It also occurs with frequent use and wear and tear, which is normal.
Take good care of your cord, and it'll be there to last you a long time.

Cheap chinese cables

My brother bought 2 off ebay... for $8 (IDK if I can post the double facepalm image here, so Ill just leave the placeholder)
П
Apart from having compatibility issues with many devices, and being very short. Can they damage my device?
I am thinking of a cold heat soldering iron, where you have a very high resistance conductors (the chinese cable in my case) and a short thin segment which connects them and which melts (my phone´s battery)
I bought 3 6ft micro usb to usb cables to use with various stuff on eBay for like $5. I haven't had a problem or compatibility issues with anything I've used so far.
Sometimes it's just the luck of the draw with Chinese stuff on ebay. I also have bought cheap cables off ebay and they work perfectly fine. There is a higher probability that the cable's construction will not be as well done as from a legit company manufacturing these cables. With questionable quality work, chances of over heating while charging, and cause of fire may be higher. These issues also can be said about legit cables too where somehow, a faulty one passed QA testing. Usually you probably won't have any problems, but I would assume a chance for issues may be higher for cheaper cables, and cheap anything for that matter.
Better buy directly
I think thats is better buy directly to the chinnesse shop, bad quality but more cheap.
I would not recommend that you use them, because I had a really bad experience bought one such pretty cheap it did not work My advice buy directly from the shop or official distributor.
battery charger
I've stayed away from these as they can supposedly shorten batter life. Not sure if this is verified though.
veriessa system
Charging electronics are in the battery, but maybe a bad charger can give so bad voltage that the electronics cannot filter it out properly.
Some chinese cables are too thin and cause your phone to charge slowly or not at all.
It's cheap but bad quality

USB jack replacement

The USB Mini-B jack (the USB port) on my LG P930 Nitro HD needs replacement. (This is partly because the battery life on the device is so short I have had to connect the thing constantly, using a variety of cables). The metal guides in the socket first appeared to separate from the male plug and are now a mangled mess, mostly at the back of the connector.
Does anyone have experience with do-it-yourself (DIY) replacement of this port?
The phone is rooted and running a custom ROM, so I can't take it for warranty.
I find many tutorials on screen replacement, but all I can find online are the replacement parts (such as this). Not a word, anywhere it seems, on replacing that port.
It's not easy to tell from either phone teardown video or the part itself, but it appears the socket is soldered to the board. . If that's true, I won't attempt it.
Also, does anyone have experience with the national myPhoneMD franchises regarding hardware repair ?
I can't speak to the level of complexity for doing this replacement, but I can tell you that indeed it requires soldering and not your run-of-the-mill soldering that you can do with any hobby soldering iron either. The 4 posts from that part you linked are just to hold the component in place...(If I'm not mistaken) there's still the actual USB connectors and they're likely surface-mount (magnifying glass and pinpoint soldering skills required here).
You might be better off with buying extra spare batteries and using apps like WiFi Explorer for accessing files on the SD Card remotely.
micro soldering definitely required
Namuna said:
I can't speak to the level of complexity for doing this replacement, but I can tell you that indeed it requires soldering and not your run-of-the-mill soldering that you can do with any hobby soldering iron either. The 4 posts from that part you linked are just to hold the component in place...(If I'm not mistaken) there's still the actual USB connectors and they're likely surface-mount
Click to expand...
Click to collapse
Interesting idea using batteries & WiFi ADB, but this device gets heavy field use and serves as my GPS on long trips. Plus, removing and replacing the Ballistic case is time-consuming. It's really too bad because after the better part of a year, I finally found a stable ROM where the battery would not drain in 2 hours or where the phone spent 1/4 of the time rebooting.
I found a close up photo confirming your observation. The signal lead connections are definitely smaller than my hobby-level solder skill can manage. The part is available from multiple suppliers, so someone somewhere has the skill set to replace it. I just hope it's not a three-week ordeal.
I feel your pain. My young son has been playing with my Nitro and he's nowhere near as anal as I am about not straining the USB cable when connected. Lately I've been noticing that I'm not getting good connections with all the USB cables I usually use (won't charge from the car adapter anymore. )
I'm glad you're even able to use the GPS for extended periods. I'm using a Hyperion fatty and CM10.1 ROM and when the car adapter *was* working, it couldn't keep my Nitro charged while using the GPS...If I couldn't get there within a couple/few of hours, I was screwed....And it's a high-capacity car adapter too.
...These guys need to get this magnetic USB connector to market, ASAP!!!
http://outsmartingtechnologies.com/project/magnetic-usb-connection/
Namuna said:
I'm using a Hyperion fatty and CM10.1 ROM and when the car adapter *was* working, it couldn't keep my Nitro charged while using the GPS...If I couldn't get there within a couple/few of hours, I was screwed....And it's a high-capacity car adapter too.
...These guys need to get this magnetic USB connector to market, ASAP!!!
http://outsmartingtechnologies.com/project/magnetic-usb-connection/
Click to expand...
Click to collapse
GPS: I have the same problem with battery longevity on trips. I could not run the phone continuously--even with the screen off--without going to 0%. On long trips there has to be a "refractory period" for the phone either off or in minimal consumption mode, if I want some battery left at the end of the journey or when I really need the GPS. I've tried a variety of DC chargers, but even the Stanley PC1A09 inverter powering the stock LG A/C adapter ultimately loses the battery fight. I am guessing that the inverter's output does not provide the A/C waveform as a wall outlet.
That magnetic connector looks great, but there would have to be a micro-format version.
None of the local repair shops in New Orleans, Louisiana will take on solder work at this scale. I ordered the $6 part but probably won't even try to install it, as I might destroy the board. Now I'm deciding between a local used locked phone, or a "new" unlocked phone on eBay. One particular seller with the best price has 99% positive reviews, but nearly all the negatives are from people who got used when they paid for new.
Have you tried bringing it to an actual AT&T store? I think we can give up the hope that they'll fix it under warranty, but at least they should be able to fix it at a cost...And if it ends up being cheaper than buying another Nitro used, then you've got a better deal.
My quit working I can charge it by putting something under the cord u might want give that a try it work for me
Sent from my LG-P930 using xda premium
stickman1981 said:
My quit working I can charge it by putting something under the cord u might want give that a try it work for me
Sent from my LG-P930 using xda premium
Click to expand...
Click to collapse
That's been my mode for a couple of months. I had ordered a Monoprice cable that didn't fit tightly, but just on my phone (all the other Androids in the house worked fine with it). In retrospect, that was an early sign of trouble.
I think the housing was stretched or distorted by an accidental cable yank months ago, and the socket just deteriorated from there. The short battery life made for more frequent connect-disconnect cycles on the hardware than I would have liked.
I ended up ordering a new replacement with a warranty that I'll probably trade with my son, and then he'll have a plan-protected phone to take to college. He's going to be in Canada and will need an unlocked phone (or else win the lottery). I'll take his locked AT&T phone for myself.
And I will take the bad-socket phone to the AT&T Device store in my area and see what it will cost to replace that port. If it's under $80-100, I'll probably go for it.

G4 keeps destroying USB cable

I just bought my daughter, 12, her first phone, a LG G4 F500k. The problem is that the phone keeps destroying USB cables. She charges it on my Tronsmart quick-charge 2.0 charger, the one with three ports. I've used that charger for more than a year now with the supplied Tronsmart USB cable on a G Flex 2 and a Samsung 7 Edge and the charger and cable have always performed as expected.
Now, ever since she started using it, first the Tronsmart cable went bust. Wouldn't work on the G4 or my phones, with the fast charger or other chargers. Today, the third USB cable went bust. A definite pattern is emerging here with each new USB cable lasting a week max.
One thing is that the busted cables still charge smaller devices like my mp3 player or bluetooth headset.
Another thing is that the G4 does show the fast charge notification while the USB cable is working and charges fast as well getting just, I guess, regular warm.
Could it be that my daughter messed up the G4's charge port while inserting/pulling out the cable?
I would really appreciate any help/ suggestions with this issue because I have finally run out of spare cables.
C'mon, guys... Anyone else experience this?
It happened to me too, I still don't understand how can a G4 charge port damage a USB cable? It happened to me 2 times.
In frustration ( I shouldn't have done this) I connected the USB cable to the G4 charge port and furiously bend the end metal by almost to 30* degrees because the USB cable was loose inside the G4 charge port , then I got another USB cable, the putting into G4 charge port felt tight and proper. Luckily my beloved G4 is fine.
Alright an update...
I tried a lot of the tricks I'd read about wonky micro-USB cables. I tried bending and lifting out the tabs at top (narrow) end which are present on some of the cables. I tried pressing with a needle and lifting out the tabs at the wider end... these tabs are on every cable... The cables would, sometime, start working again for a charge or two but died again.
On the 25th of Nov, 2016, I took the phone to a professional repairs guy. Upon a cursory examination, he declared that the G4's charging port was perfectly fine. I insisted that the damn thing was eating all my cables. Luckily, I had brought along one of the recent dead cables.
The repair guy looked at the charge port under some pro-microscope thingie and said there was carbon damage. Then, he stripped apart the USB cable I'd taken with me and checked that one of the terminals was shorted out.
After extensive examination, he concluded and confirmed that it indeed was the charging port that was effing up the cables because there was carbon corrosion on it that transferred to the wire... something to that effect. Interestingly, he didn't find any evidence of water damage on the inside of the phone... motherboard etc. Just the charging port.
He didn't have an original G4 replacement charging port at the moment so he applied some dielectric grease on the port and told me to use only one cable with the G4.
I can confirm that like all my other phones, the G4 was not exposed to water or about as much exposed to, I guess, ambient humidity as my other phones.
.........
Well, these are my findings after my personal debugging and pro consultation. Flagship, my ass.
-------------------------
Today, it has been 14 days since the visit to the technician. The present USB cable has lasted for 14 days now (and still working great) which is 10 days past the previous record...
My recommendation is to try and take off any oxidation/rust from the phone's charging contact (the technician just used a flat long, thin metal object to scratch off the buildup), then applying a dab of dielectric grease. It would be a good idea to turn the phone off and take out the battery before attempting this.
From what I've heard, silicon spray (WD40 brand etc.) can be used as well by spraying some first on a cotton bud and then coating the contact with it.
Try this before anything else if you are experiencing symptoms similar to what I stated in the original post.

USB-C Charging port. Fragile?

That sliver-thin middle piece within the charging port...
Just seems to be that with the supplied case and cable, if you don't insert the USB-C plug angled just right and you're not careful you'll hit that piece and possibly break it. If I'm not mistaken that piece is a vital component, right?
If it is the the Samsung phone is going to be short-lived.
This coupled by the fact that the phone's signal is poor is really pushing me to return the phone. Unfortunately, I purchased the phone from an Ebay seller who charges a 25% restocking fee. I will have to seriously consider the options here.
Most people don't have any issues with USB-c ports. I, on the other hand - and I really believe I'm very careful having never had issues before USB-c arrived on the scene - managed to break the port on a hi8 pro tablet, a Vernee Apollo phone and my old Samsung S8. So umm...yes, in my experience USB-c is fragile as ****. Lol.

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