[HELP] Phone boots up only when cold ?!?! - General Questions and Answers

Hi people,
I have a question, I've been reading these forums a lot but now I have a problem that I don't really understand:
My HTC Trinity that has served me well does not want to boot at normal temeratures 21C - 70F. The akward thing is that if I put it in the freezer for 10 mins, it starts working , doesn't get hot. As it reaches 20+C it freezez or doesn't want to wake up from sleep anymore.
Any ideas as to why this happens it's clearly a hardware fail but what part of it ?
any help would be greatly appreciated.

Maybe it's the battery......did you tried it with other batteries....?

It maybe that you have a poor connection within the phone being affected by thermal expansion. Might also be moisture condensation in your phone (made worse if repeatedly placed in and out of a freezer) that requires drying out.

hfzarx said:
Maybe it's the battery......did you tried it with other batteries....?
Click to expand...
Click to collapse
I'm guessing it's not the battery as when I put it in the freezer I take the battery out. Also, while the phone is off the battery charges normally, without heating up or anything.
The theory of a faulty contact makes more sense but then which one ? I do now have a star shaped screw driver with me (I'm travelling for the moment) but I'll try and open the phone once I get back to a more tinkering friendly environment.
I have put it since in a drawer and it has been waiting for me quietly. In the mean time I bought a Sony Xperia X1 which is an excellent phone. I would still try to fix my trinity, I'd use it exclusively as a GPS if it works.
Any other theories as to why this might happen or what should I do to fix it?
Thanks guys for the useful replies !

When issue occurs will it power up plugged into charger?
As BundyR stated there is a poor connection somewhere. Also known as a "cold solder joint". The trick will be having device apart but still being able to power it up at the same time and start poking around with a toothpick and a magnifying glass starting with the battery contacts and moving on from there.
good day.

Related

Overheating causes screen problems?

Hi all.
Lately I'm facing a strange problem with my device.
when I navigate with it in a sunny day,
or talking on the phone while charging,
the devices gets hot and the screen goes down.
I can hear that the device is working and the buttons is working, but the
touchscreen is 'dead'. its all black.
Even a softreset won't fix it, the device goes up without the screen.
To fix it I need to pull out the battery for like 2 minutes untill the device gets cold.
is it hardware problem? Anyone else experienced any of these problems?
Thanks!
...ehem...
try to charge it via USB and not a car charger. Is there any difference now?
IMHO you should replace the device
the same problem
Hi
I have the same problem than you
I can use my Polaris in my computer with MyMobiler application but the sceen it's always black.
Sometimes when I do a Hard reset and press button left side it's OK but after some days it's comming again.
I think is not a hardware probleme but software problem.
Do you have resolve your probleme ?
Moh
mmoh said:
Hi
I have the same problem than you
I can use my Polaris in my computer with MyMobiler application but the sceen it's always black.
Sometimes when I do a Hard reset and press button left side it's OK but after some days it's comming again.
I think is not a hardware probleme but software problem.
Do you have resolve your probleme ?
Moh
Click to expand...
Click to collapse
I haven't resolve the problem yet.
the screen getting black is due to the nature of how a display works. i dont know of it actually damages the device, but i strongly believe so.
the working conditions of the device are written down in the manual, if you exceed those they might not replace your unit. this of course sucks, but it *is* written down to not expose the unit to direct sunlight.
schaggo said:
the screen getting black is due to the nature of how a display works. i dont know of it actually damages the device, but i strongly believe so.
the working conditions of the device are written down in the manual, if you exceed those they might not replace your unit. this of course sucks, but it *is* written down to not expose the unit to direct sunlight.
Click to expand...
Click to collapse
I didn't know about the exposing to the sun ...
well, I hope it isn't got damaged badly.
thanks.
As I said, I'm not sure about the damage part, I could be completely wrong. I just think it *could* be...
If it doesnt change and the device gets unusuable all the time, I'd suggest you send it in for a replacement. Maybe you really got a bad unit, who knows.
Edit: I just thought of stuff which is usually written down in manuals and the glovebox problem popped in my mind: devices stored in the glovebox of your car are breaking down because of the sheer heat which builds up when the car is standing in the sun for a long time. All sorts of displays usually break or get completely black until the unit could cool down again... And in the glovebox they werent even exposed to direct sunlight, its just the heat...
hello. I have same problem. But i can't catch situation when it appears. I think, the sun is not an main culprit, because my phone goes down, when i
playing games in the room! may be it's overheating, but cooling doesn't help me.
To fix it, i do several soft resets (sometimes more then 300 ). Sometimes one reset helps, sometimes no. I think, it is hardware problem. Also i have problems with my camera (colormess). May be they are connected.
I will try to send it to service.
Hey, i put my device into refrigerator, and screen is working . I have tried to reanimate it since yesterday. Battery unplugging didn't help.
F*******K!!!
After ten minutes in the room with temperature near 20 C it's black again.
Can be problem with temperature sensor?
lamerbot said:
Hey, i put my device into refrigerator, and screen is working . I have tried to reanimate it since yesterday. Battery unplugging didn't help.
Click to expand...
Click to collapse
Don't put it in the refrigerator without putting it in a plastic bag or something. Moisture can kill it.
i put it into plastic pack.
But i think, that I'll kill it myself by throwing in the wall
Hm, question:
Where does temperature sensor dislocated? In battery or in PDA?
Well,
In the lab they told me my Board damaged up.
total-lost
What kind of damage?
this problem i faced it two times ,one of them when i put it inside my car and the AC was runing (cold) and my screen became black
and the other time it happened in a hot condition (also in my car)
realy this is very strange
and the solution for both to remove the battery for a while

[Q] [q] battery charge indicator incorrect after water damge and restore

Hello,
I have searched and searched this forum to find any threads or posts that describe this problem. I have found lots of similar ones, but none like this, so that is why I have started a new thread. If I missed this topic somewhere, I apologize for not having found it.
My wife and I both have Skyrockets (GSII - I727). Stock AT&T ROM (not rooted), but both unlocked. Mine got partially wet last week (toilet incident, would rather not elaborate, but I will answer the first question everyone asks - yes it was a "clean" toilet ) Anyway, I immediately liberally rinsed all ports with alcohol and warmed gently with a hair dryer. After drying I powered up, and everything worked, except the battery percentage display (with a variety of completely fresh and fully charged batteries), would only show in the 50 - 68% charge range, and the phone seemed to die at about the rate one would expect commensurate with those numbers. Put it in a bag of rice for 2 days. No better.
So, after reading here and watching several YouTube videos, I completely disassembled the phone. cleaned all ports, ribbon connectors, mother board, etc. with CRC electrical contact cleaner spray using the spray tube and a very gentle toothbrush. I paid special attention to the micro USB charging port, and all other contacts and circuits that seemed to be related to charging, though I am by no means an electrical engineer or technician, so a lot of it was guesswork. I made sure all was dry and new looking. All contacts intact, no visible corrosion or bridging, and reassembled the phone perfectly (pretty proud of myself for not breaking anything in the process!)
The phone still works great, except for the battery percentage display issue. I have tried everything I've read on this forum about recalibrating the battery meter - discharging fully and then charging up. With the phone on, with the phone off, every permutation I can think of. I tried clearing the cache and rebooting. Still, the maximum the display will read is 68% and that's it, and the phone behaves and dies like it has a battery that is only 68% full, even though I know I am putting 100% charged batteries into it. I have verified this by putting the same batteries into my wife's identical phone and it displays 100%.
If my phone we're lasting as long as it normally would with a fully charged battery, I wouldn't be so bothered by the display being inaccurate, but that is not the case. I've downloaded CPU SPY and some other apps to see if my phone is using an unusual amount of battery resources, but it is not. So, that's the story.
I am not afraid of rooting the phone, and I have no warranties left so I don't care, it's just that from what I've read here on the forum, people with somewhat similar issues have not benefitted from rooting and then running apps or programs that are only available to rooted phones, so I would prefer not to go down that time consuming route, if all I'm going to do is hit another dead end.
So, any suggestions or comments would be greatly appreciated! Thanks in advance.
Best regards,
Ron M.
This may sound dumb, but did you try a factory reset?
sireniankyle said:
This may sound dumb, but did you try a factory reset?
Click to expand...
Click to collapse
Thank you for your post sireniankyle. Not a dumb question at all, and actually the answer is no. I have certainly considered it, but I haven't done it yet for 2 reasons.
The first is that from all the research I've done, trying to find others who had similar experiences (I have yet to find anyone with the IDENTICAL problem), they have all without exception reported that factory reset did not solve their problem.
Second, because of my previous experiences with doing a factory reset, it seems that no matter how well I am backed up, that it turns into a very time consuming process in getting the phone tweaked and with all the applications and setting back to where I had them. So, I've been holding out and saving factory reset as one of the last resorts.
The other last resort is to root the phone, because apparently there are some apps that might be able to reset the battery counter that will only work on a rooted phone. However, again in my research thus far, I haven't identified anyone with a rooted phone with a similar problem who has had succeeded in solving the problem.
Perhaps this weekend if/when I have the time and patience I will attempt one or both of the above. It's just that I have such low expectations of success that am reluctant to start down those paths.
If you, or anyone else on this forum can point to any experiences where these methods actually worked for someone in this same or similar situation, I would very much appreciate if you could direct me to the appropriate thread.
Thanks again very much for your input, and your further assistance and suggestions would be most appreciated.
Best regards,
Ron
No problem. I just try to help out where I can.
I can't say that I have had any of these issues. I understand the issues with backing up, but if you install twrp, you can create an entire backup of your phone. I've done it many times before without issue, and if resetting it doesn't work, you can still go back to your original set up.
It seems like you may be a pioneer in this particular issue. I hope you figure it out. Both for yourself, and for others who have this problem in the future.
Sent from my SAMSUNG-SM-N900A using XDA Free mobile app
sireniankyle said:
No problem. I just try to help out where I can.
I can't say that I have had any of these issues. I understand the issues with backing up, but if you install twrp, you can create an entire backup of your phone. I've done it many times before without issue, and if resetting it doesn't work, you can still go back to your original set up.
It seems like you may be a pioneer in this particular issue. I hope you figure it out. Both for yourself, and for others who have this problem in the future.
Sent from my SAMSUNG-SM-N900A using XDA Free mobile app
Click to expand...
Click to collapse
Thanks again sireniankyle!
I used to like being a "pioneer", but as I get older now I just want my stuff to work, and don't have the time or the patience to go where no man has gone before Nevertheless, I absolutely hate to admit defeat, and now that you've turned me onto twrp (do I have to root first to use it?), then perhaps that will make the experiment less time consuming, so I may try this weekend if time allows.
In the meantime, the phone continues to function normally in every other way. I simply carry a couple fully charged batteries in my pocket throughout the day, which are of course 100% charged via my wall charger, but show as 58% as soon as I put them in the phone, and then die at approximately the rate one would expect from a 58% charged battery! Weird huh?
Best regards,
Ron
Was given a Skyrocket the other day which suffers from the same kind of problem (had massive water damage), but the battery percentage is stuck at 0%. So of course it will not even boot up. (Fully charged the battery in a wall charger.) Only thing the power button will do is vibrate the haptic feedback given at first power on, no screen activity. Funny thing is it'll go into Download mode perfectly normally and sit on the Odin mode screen till I assume the battery dies. However it will not go into Recovery mode. Plug in a USB charging cord to charge block or a port on a PC and the phone powers on and works perfectly fine, though forever stuck at 0% battery.
So the only thing I can think of to quickly get around this is without solving the problem, if in fact it can be, is to get a charging case. Like such, for example. http://http://www.ebay.com/itm/XPAL-Galaxy-S2-Skyrocket-PowerSkin-Case-i727-Extended-Battery-Gel-Cover-OEM-New-/310903753323 Had one similar before for another model and when installed it shows as if the phone is charging. So in theory will work for me, though powered strictly by the cases battery. Should work for you even better as you'll get the cases battery life then your own 58% worth of battery life. Edit, just realized when the last post was made, you probably have a new phone and moved on by now.
**I'm going to try to craft myself a homemade powered case yet, have tons a batteries kicking about.

[Q] Stuck on booting up Samsung screen

Hi,
My Note Pro 12.2 P900 64gb is now stuck on the samsung screen of booting up and I am wondering if anyone can help me figure out what to do next.
I was experiencing the flickering issue for the last two weeks which got progressively worse and eventually caused random rebooting. One time last week it started booting slower and then it wiped out some widgets on my start screen and the apps in touchwiz but most everything else was OK. Then yesterday it would not boot up past the samsung screen. It charges up OK, and I can get to Odin where it asks if I want to load another operating system by holding power and vol up. But unless it is plugged in, just holding power off puts it in a boot loop.
The other part is if it is stuck and I hold power off it usually vibrates twice before boot looping.
I rooted the tablet when I got it, but still run stock touchwiz, I just needed some rooted apps namely LMT pie controls.
Can anyone please point me towards what to do next. Thank you very much for your help.
I guess wiping data and factory reset is your only solution right now
I shall warn you you could lose your data so I hope you already have a backup!
And also I've read that lollipop fixed flickering issue in p900 devices
I hope everything goes well for you
Good luck
hey there, you are not the only one, check this post. it seems is somethig related to battery issues
http://forum.xda-developers.com/showpost.php?p=61785158&postcount=14
minionhunter said:
The other part is if it is stuck and I hold power off it usually vibrates twice before boot looping.
Can anyone please point me towards what to do next. Thank you very much for your help.
Click to expand...
Click to collapse
When power on, try pressing on the back, near the center with your hand. to see if it can boot normally,
Keep pressing while power on. if it works I will tell you what causing this problem.
https://www.youtube.com/watch?v=VeSG0hHpAG8
here you can look by the minute 2:30 where the connector is located, basically under the samsung logo. I'm not doing tests yet because i have a busy day ahead
Thank you all for the responses. Holding down the back while powering on does not help. I do have the flickering thing and that started leading up to this. Lay night I took it the battery and disconnected it for a half hour and that did not help. Looking at the connections with a 20x hand lens did not reveal any cracks.
I don't remember how to wipe the data off the device, I got it right when it came out rooted it with cf root and never got around to twrp. All I wanted was LMT and Xposed. I never even updated the OS.
If anyone can help walk me through this to get it running again I'll send you a green poetic skin used once or a white well used GumDrop hideaway case I tested for work. I just would like to get this running instead of needing to purchase a new one.
Thank you again. Sincerely.
Flickering screen is caused by cracked battery connector which cannot be seen under magnified glass. Re solder will fix it, trust me I did fix some of them
Beut said:
Flickering screen is caused by cracked battery connector which cannot be seen under magnified glass. Re solder will fix it, trust me I did fix some of them
Click to expand...
Click to collapse
So resolder the 6 posts connecting the battery connector to the motherboard? Is there anything special I need to do that, just my soldering iron with a fine tip and solder? Anything special I need about the solder or do I need a wik or anything? The last time I did any soldering work was about 25 years ago.
Also will this fix the bootlooping and hanging on booting up at the Samsung word on the screen? If it is not going to fix that problem, maybe I should look at something else first.
Thank you very much again for your help.
Sincerely
minionhunter said:
So resolder the 6 posts connecting the battery connector to the motherboard? Is there anything special I need to do that, just my soldering iron with a fine tip and solder? Anything special I need about the solder or do I need a wik or anything? The last time I did any soldering work was about 25 years ago.
Also will this fix the bootlooping and hanging on booting up at the Samsung word on the screen? If it is not going to fix that problem, maybe I should look at something else first.
Thank you very much again for your help.
Sincerely
Click to expand...
Click to collapse
First, pressing the battery connector help your tablet to boot is a confirmation of cracked battery connector solders. 90% flickering problem is from cracked battery connector. 10% is bad battery. You should fix the battery connector first as it's major defect seen in many Samsung tablets. Re solder is simple, apply flux, then heat these pins and add more solders as possible to secure these pins. Even new main board, this connector will crack just after 3 or 4 months depending how you use your tablet, especially with who using it on their laps. The main board sits on a flexible LCD and only 3 screws to hold it to the frame at 2 speakers. You don't need to remove the main board, just disconnect your battery and re solder the connector from the top.
Be careful as this connector is very close to other components. Trust me, this re work will fix this problem as I have seen in some cases, battery jumps up from 8% to 45% after the re work, other cases pressing the battery connector help the tablet to boot or stop flickering.
This person applied the fix and succeed.
http://forums.androidcentral.com/sa...screen-flickering-problems-3.html#post4473418
I have the Note Pro 12.2 and I had this same screen flickering issue. It would start to flicker at first around the 38% mark. I did research online and found this thread and many others. I tried the software fixes like the enabling of Developer Mode and screen brightness and other tries, but to no avail. When I pressed on the back of the tablet, the screen flickering would stop but then shortly return. So I saw the fix of trying to raise the motherboard which worked for about 2 weeks, then the screen flickering did return. It would then start to flicker around the 58% battery level mark and when it got down to around 26%, the tablet would shut down. When I plugged it in, it would show battery level of 0%, then quickly jump back up to the 26% mark when it shut itself down. So then by this time, I saw more of this thread and now was shown the soldering of the battery connectors. I had soldering equipment, but it was too large for this repair as these 6 pins are very close together. So I went to the hobby shop and purchased new equipment for about $30 with a smaller pin to be able to do this. Now, I am not an electronics guy and my past experience was replacing two bad capacitors on my Plasma TV when it went bad. That was the extent of my experience to date. So I opened up the back of my tablet and soldered the 6 pins again and the screen flickering has not returned. I am on my 5th battery cycle from 100% all the way down to 2% and the screen flickering and shutting itself down has not returned. Some people have said an electronics guy will do this for you for around $30. Well, I spent the $30 and did it myself. I want to thank the people for posting the solutions here as the soldering worked for me.
And from this post, a confirmation that repair center will do the same thing to fix flickering , auto reboot, auto shut down.....etc...all problems caused by cracked battery connector ( Connector Header ):
http://forum.xda-developers.com/showpost.php?p=58943998&postcount=74
Ok I'll try to resolder it this weekend and report back. I think that my pertinent problem is that I have both the battery issue AND another problem that the tablet won't boot up at all but I will try the battery fix first and see what happens. Then I will report back.
Thank you very much for your suggestions.
Your feedback is very important as I see many " Hit and Run " users, they get the solution they need but never post back. Your first priority is fixing the battery connector, then next is the battery if problem persists.
This is a hardware defect I have seen in many Samsung tablets: battery capacity fluctuation, quick discharge, auto reboot, auto shutdown.......all come from battery connector . Read the threat Flickering Screen you'll see others try all solutions but never work because they don't know this is a hardware problem coming from this tiny connector.

Phone COMPLETLY died while i was using it.

As you can see in thread, phone just dead. Dunno what happened. I bought it an year ago. I've tried to connect it to computer and it was visible as QHSUSB bulk but now i can't see it there. It doesn't react for turning on. I can't get into download mode, recovery mode. Very long time ago i flashed Android MM from xda and it was working good. It had ~50% of battery when died. I've tried to put off battery and then connect to pc but still nothing happen. It has broken screen (was working good) but i've done it in September 2016 so. I can connect it to Linux but i think it won't help too. Any fixes? I think they won't take It at warranty because of screen. Phone looks like dead for ages :<. @edit IT'S NOT DEAD! I've disconnected something from battery this longer one and when i click power i can hear "something" in the phone. And it gets heater so looks like processor is working. But it's still not visible in the device manager.
edit2
i know emmc pinouts.
While I was using the phone, with battery at 66%, the exact same thing happened to mine. I'm sick of it. Time for a new phone.
(Had the rooted V15c image on it, no broken screen, only the camera issue - should someone care)
Same problem here, what is happening . My phone was approximately 80-90% and it suddenly turned off and I can't turn it on ..
bump
Phone went black with warning
The same just happened to mine. It was fully charged and I was using it and then the screen went black. There are no lights when I plug it in, no vibration after pressing and holding the power button. Nothing
I've connected it to my pc and a driver installed, I think the same one as a post above (QHSUSB) but still the phone doesn't respond in any way.
It's the European H955 on official MM 6.0.1 no root or mods and is out of the one year warranty yet was in excellent condition. Does this mean the phone is for scrap and nothing can be done?
Hi, I found a solution to repair the phone in this state. I start by telling you a story, a long time ago I had an HP laptop. video card was detachment from motherboard, and to a stick again we used a method called reflowing. I thought that the phone has the same problem, however we have nothing to lose so I opened the phone I took out the motherboard and started to warm up each chip using a hot air blower. I mounted the phone back and now works like new. I apologize for my bad English I am from Romania.
alex_otopeni17 said:
Hi, I found a solution to repair the phone in this state. I start by telling you a story, a long time ago I had an HP laptop. video card was detachment from motherboard, and to a stick again we used a method called reflowing. I thought that the phone has the same problem, however we have nothing to lose so I opened the phone I took out the motherboard and started to warm up each chip using a hot air blower. I mounted the phone back and now works like new. I apologize for my bad English I am from Romania.
Click to expand...
Click to collapse
Any one tried this method and succeeded may please inform on this forum
My phone crashed, would reload to lock screen then restart and finally would not start at all. Before this the rear camera stopped working.
I had reset, flashed a new Rom and replaced the Camera which didn't solve the issue.
After the phone died I tried reflowing though I had no heat gun so I just used the oven. 200c for 7 minutes after disassembly.
That was about 8 hours ago and I am typing on my phone.the Camera is also working.
I will post if it stops again. I did it as the phone was dead and I had nothing to lose.
I have the same problem, and I am interested in getting a heat gun for this purpose. What specific parts of the phone did you reflow/heat? (in terms of the chips, or the entire board.)
Thanks in advance.
xaresys said:
I have the same problem, and I am interested in getting a heat gun for this purpose. What specific parts of the phone did you reflow/heat? (in terms of the chips, or the entire board.)
Thanks in advance.
Click to expand...
Click to collapse
I did not heat the whole motherboard, just the chips under the shields.
Oven Phone Fix?
clb2c4e said:
My phone crashed, would reload to lock screen then restart and finally would not start at all. Before this the rear camera stopped working.
I had reset, flashed a new Rom and replaced the Camera which didn't solve the issue.
After the phone died I tried reflowing though I had no heat gun so I just used the oven. 200c for 7 minutes after disassembly.
That was about 8 hours ago and I am typing on my phone.the Camera is also working.
I will post if it stops again. I did it as the phone was dead and I had nothing to lose.
Click to expand...
Click to collapse
What part of the phone did you reheat exactly? The whole phone? or did you take all the plastic out?
This part here: http://m.ebay.com/itm/OEM-AT-amp-T-LG-G-FLEX-2-H950-REPLACEMENT-32GB-LOGIC-BOARD-MOTHERBOARD-ORIGINAL-/141923410166
Also be sure to take off the rubber part on the back. The purpose is to remelt the solder.l, so only board and nothing else.
To disassemble there are some videos on YouTube. Remove your sim card before taking off the backing
Remember this is a last resort, you could end up with a completely dead chip.
clb2c4e said:
This part here: *link*
Also be sure to take off the rubber part on the back. The purpose is to remelt the solder.l, so only board and nothing else.
To disassemble there are some videos on YouTube. Remove your sim card before taking off the backing
Remember this is a last resort, you could end up with a completely dead chip.
Click to expand...
Click to collapse
Thanks for the information. Is there a specific way you have to remove the shields, or do I use a soldering iron to get it off? (And if so, does it do any good to solder them back on?)
clb2c4e said:
This part here: http://m.ebay.com/itm/OEM-AT-amp-T-LG-G-FLEX-2-H950-REPLACEMENT-32GB-LOGIC-BOARD-MOTHERBOARD-ORIGINAL-/141923410166
Also be sure to take off the rubber part on the back. The purpose is to remelt the solder.l, so only board and nothing else.
To disassemble there are some videos on YouTube. Remove your sim card before taking off the backing
Remember this is a last resort, you could end up with a completely dead chip.
Click to expand...
Click to collapse
Did it 395 degrees Fahrenheit (201.66 Celsius) for 7 minutes, I preheated the oven. The camera and everything now works fine.
xaresys said:
Thanks for the information. Is there a specific way you have to remove the shields, or do I use a soldering iron to get it off? (And if so, does it do any good to solder them back on?)
Click to expand...
Click to collapse
You shouldn't have to use a soldering iron to take anything off. At least not as far as I am aware of.
I should note that as of this morning my phone when blank and will no longer turn on. I will try reflowing at a higher temperature as some solder may need a higher heat but I am not optimistic that this is a permanent fix.
Hey everyone !
First try to connect it in emergency mode to the computer in order to flash with LG UP. If you cannot boot into emergency mode but the device appers on your computer ( and PC is unable to connext into GF2) maybe you could burn your motherboard.
I burn one 7 months ago with my device resting on my pocket so its a common problem for this device (as official support told me so its full covered by guarantee )
Hope you can solve soon !!!

Black screen after getting hot while charging

Hello together,
I have a Z5 (6653) that didn't start anymore and got extremely hot while charging. To be more clear: after connecting the phone to the charger the red LED turned on, then after about 10 seconds later it turned off again. From this moment on the phone's back started to get extremely hot. The source of the heat is about 1cm right and 1 cm down to the back camera (so you can say 1cm diagonal from the camera to the phone middle). Because of this I doubt it has to do with the battery as it should heat the lower two-third and not the upper third of the phone. Maybe the processor is at this place?
I tried to connect the phone in flash mode with the PC and it connected, but disconnected after a few seconds, probably because battery was empty. I repeated this procedure (connecting to charger, disconnecting, reconnecting, connecting to PC) a few days and suddenly the red LED kept on and the phone didn't get hot anymore.
So I charged the phone fully and wanted to start it, but the screen won't turn on anymore. Connecting it to the PC and the Phone drive (MTP) is displayed but empty, because you need to unlock screen. Also I hear the connecting sound of the phone and touch feedback sounds.
I tried the following things:
Xperia Companion Repair
Flashtool flashing newest ROM
Flashtool downgrading to 32.0.A.6.152_R5B (LP ROM)
Nothing helped. Well, the idea it is an hardware issue might be at hand, but maybe there is something else I can try first?
And if it is an Hardware issue, what is the cause? The Display itself? Then why was a single point at the phone back the source of heat and not a large area on the phone front?
A short summary:
Phone gets hot while connected to charger
Battery won't charge (LED indicator turns off after few seconds)
Source of heat is 1cm to the right and down to the back camera; after 2 minutes whole phone is hot and you can't recognize the source
After days of repeating the action (connect to charger, disconnect, connect to PC, connect to charger) it suddenly charged the battery and didn't get hot anymore
Display won't start anymore; still responsive
Tried Xperia Companion Software repair
flashed latest Stock ROM
flashed Lollipop Stock ROM
Phone has locked bootloader and is/was not rooted. I'm grateful for all help!
I guess its a dead screen maybe u droped it and the pins of the screens got ejected from the motherboard.. Ignoring the fact that it was empty of charge and you charged it.
From what i understand that the phone is working but there is no screen.
The best thing u can do is to check a hardware store that is capable of diagnosing the issue.
Im not helping here i know but wanted to share my thoughts..
Gd luck with that.
Thanks for this anyway. But phone didn't drop.
The fact that the phone wasn't charging and got hot instead at the beginning is very irritating. Especially that it wasn't the front but a point at the back near the camera. Is there a way to check if it's a Display issue and not a Mainboard/Processor/other Chip issue?
At least in Germany are a lot of stores that aren't too competent at all. But nobody would tell you, so its very helpful to know as much as possible before going to a store.
I think it might have something to do with the gpu inside the soc? The heat might have burned something inside the mainboard (how hot was it btw, like running intensive apps or even hotter than that?) Another thing that might have happened is the display cable is loose.
I've seen some Z5's screens and they're not that easy to die.
The best thing I can suggest is that you repair it in a trusted shop that lets you observe the repair procedure directly (open the phone, take the parts out, identify the problem).
Good luck with your phone.
colorado48 said:
I think it might have something to do with the gpu inside the soc? The heat might have burned something inside the mainboard (how hot was it btw, like running intensive apps or even hotter than that?) Another thing that might have happened is the display cable is loose.
I've seen some Z5's screens and they're not that easy to die.
The best thing I can suggest is that you repair it in a trusted shop that lets you observe the repair procedure directly (open the phone, take the parts out, identify the problem).
Good luck with your phone.
Click to expand...
Click to collapse
I never played any game so it is hard to compare, but I never had a phone in my hands that got this hot before. You didn't get instantly burned touching the phone but it was already inconvenient hot for your fingers/hand.
There might be some trust able stores to find, but I doubt somebody will let you observe it, not even Apple store does. If you see the trick of how to repair it easy and fast, you might do it yourself next time. And it is also a question of the price. If I can buy a used but totally unharmed Z5 for the same price, why should I let it repair?
As far as I could see in Germany repairing Display starts at 99€ for the Z5. Buying display with adhesive would start at 49€. But if they change the Display and it's still broken you have to pay for the Display and also for the mainboard i.e.

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