[Q] Phone starts and sounds but screen remains black, with backlight on!! - Xperia Z Q&A, Help & Troubleshooting

Hello all,
My Xperia was in a serious bootloop that I couldn't fix, not with pc companion not with flashtool flashing stock roms. So I gave up and sent it to the closest Sony Mobile certified repair store, it took them one month to tell me they couldn't fix it, they said they opened it, changed the battery and it still had the same problem so they also gave up and gave it to me, they did say the problem could be the motherboard. I'm now living in Brazil and getting a motherboard for the c6602 is impossible first of all because the phone was never commercialized here (and importing is impossible, it'd take 2.5 months and they'd charge me 200% of the part price, unfortunately that's how Brazil works ). Something interesting that happened is that when I got my phone back they had solved the bootloop issue but they created another issue, the phone starts makes all the sounds the screen turns on BUT all you can see in the screen is the black color, so the backlight is on but nothing shows up.
Could I be able to fix this via software? or the only option is changing the motherboard (or maybe fixing something on it)?
If any of you knows how to fix this I'd appreciate an answer.
Video here: http://youtu.be/3I4VIBAXUsc

psycho-punk said:
How do you know it isn't a display problem?
Click to expand...
Click to collapse
Because I sent it to sony and they said the problem was the motherboard and the problems the phone's been giving are pretty random, for example at the beginning the problem was that it had random reboot each one with more frequency, it when from that to just work with the ac adapter connected, it went from that to a bootloop of just showing the sony logo and restarting, after I got it from sony the problem is that it boots app (without needing to be connected) it makes all the sounds like it was working perfectly but the screen is ON but black. So because all this I'm convinced it's the motherboard.

I see changing the battery didn't fix your problem.
I think it's so sad that this phone with just more than a year of life are getting this serious problems and sony isn't doing **** to help us. They keps my phone 1 month just to tell me that it couldn't get fixed, they said they changed the battery and all but still the same problem. I've reached a point when I just don't trust sony anymore, I'm getting a galaxy s4 on monday but still I wanna fix this crappy-phone.

Well, in my case it happened out of nowhere, I wasn't doing anything special with the phone..., I'm thinking maybe restoring the TA partition would fix something? I don't know... I found the motherboard for 80 euros in aliexpress

Related

Xperia restarts automatically!

I am facing the problem recently last 2 3 days
my Xperia restarts automatically
sometimes there is 30% to 40% charging left still its shut automatically and never been start.. i have to change new battery
any solution for this or anyway to find the problem?
regards
anybudy would like to answer this please?
I'm having a similar problem...my x1 sometimes shuts down while in the middle of doing something, like opening apps, sliding out the keyboard or even navigating touchflo. I suspect it could be a battery problem, as someone in the forum discovered, having also shut down problems, that his battery is loose and the connectors are not properly met so he stuck a bit of hard paper to fix it, but I checked mine and the battery is not loose. I don't want to spend on a new battery if these shut downs weren't really cause by faulty batteries, so yeah anyone has a clearer understanding on this?
Hi all
I am also having a similar problem the past 2 days and as of now i cant use the qwerty keyboard because just as i begin to slide the qwerty out the screen goes black and the phone need to be rebooted.
I have just changed to Valkyrie 2.4 yesterday thinking that maybe its was software problem with Touch X but the problem still persists. Only difference is that with Touch X the phone would reboot itself.
Anyone else having any similar issues and what would the fix be, or shall i be off to my nearest service provider for repairs?
Thanks
Uhm.. about that problem when you slide it out and the device turns off.. i had that too and i send it in to repair.. it will probably be fixed under warranty, and stock rom or custom rom doesnt matter the problem was still there... and it happend to me 5 days ago..
knufh said:
I'm having a similar problem...my x1 sometimes shuts down while in the middle of doing something, like opening apps, sliding out the keyboard or even navigating touchflo. I suspect it could be a battery problem, as someone in the forum discovered, having also shut down problems, that his battery is loose and the connectors are not properly met so he stuck a bit of hard paper to fix it, but I checked mine and the battery is not loose. I don't want to spend on a new battery if these shut downs weren't really cause by faulty batteries, so yeah anyone has a clearer understanding on this?
Click to expand...
Click to collapse
'When i slide the thing out it sometimes restarts'
I used to have that with the stock ROM so this all might be more software related...
yeah I am having the same problem, No Water Damage btw. i found that if i sometimes in portrait mode if pressure is applied to the top right region, it will shutdown and/or restart. When I slide my screen up to landscape mode it screen is just black. I'm going to contact Sony Ericsson to see what they have to say about this.
SyntheticDistortion said:
'When i slide the thing out it sometimes restarts'
I used to have that with the stock ROM so this all might be more software related...
Click to expand...
Click to collapse
It resets when the phone freezes. Sometimes it freezes so bad you have to manual reset.
My phone is doing the same thing but when i slide it up. The screen goes blank and then it restarts by itself. I never flashed my phone so I thought it was a firmware issue. I finally updated to the R3A firmware and lo and behold the same results, but instead it didn't restart, it just turned off or the screen goes blank. I've sent the phone to Sony Ericsson and they told me that I would have my phone back in 7 to 10 business days, but they're liars!!! It's been 13 business days and counting and no word as to whether the phone can be fixed or updates on status other than it's in "work in process". So then I called again today and complained to SE and the result is that they are "awaiting parts and Xperia parts are on back-order". After further probing SE told me that they would call me on Monday to officially let me know what the hell is going and why it's taking so long to repair my phone. I paid $800 usd for the phone and I would expect that their repair service would be a lot better and quicker than what it is! During my wait time for my phone, my PS3 broke down, I sent it in, got it fixed and returned already. That was within a week. There is definitely something wrong I tell you! They just need to send me a new phone!
Sorry about my rant guys, but I'm pissed!!!
My damn phone has the same issue, Until now, this hasn't been repaired for it's crack. And I'm almost out of warranty days, I think I bought it 2md day after the xperia was released. I'll try testing abou the presuure point though. I give you update
I did have the same problem..
Hi... I did have the same problem n I couldn't find any solution... So i send it to repair...
U can check my threads..
http://forum.xda-developers.com/showthread.php?t=520143
n
http://forum.xda-developers.com/showthread.php?t=519322
mca
EDIT : It seems that is an XPERIA PROBLEM!!!! LOOK!!! : http://forum.xda-developers.com/showthread.php?t=550242 !!!!! , many people is having the SAME problem...
I'm disappointed..

Droid 3 screen stays black .

So the phone (XT860 Bell) has problems when I unlock it the screen stays black. The phone works though cause when someone calls I can still pick up as I know somewhat where the green button is. But for the rest I can't do anything.
The only way to get the phone back is to remove the battery and restart the phone. Then it works again.
Anyone else had this problem?
have you tried hard resetting it?
No will do so. But before doing that I thought maybe there is some simple solution.
After the update to 2.3.6 things went all a bit wrong I think.
If you got this after the update, I am quite confident data wipe will solve your problem. You can try wiping cache only first - this way you won't lose your configuration and might solve the problem. The update supposedly wipes cache, but maybe that didn't work properly while you were updating. Enter stock recovery and give it a try.
Hey thanks for the help. But just did a reset. Not sure what went wrong when I did the update. Did wipe. Annnnyways. Right now it's stable. Let's see if it stays like this.
Ok sadly the reset didn't fix it. It took a whole day to go black again but still happened.
Any other solutions? I am scared that it's a hardware failure...but let's hope not cause I am in Holland.
I have the droid 3 and the same exact thing is happening to me. Sorry to tell you this but it has to deal wit the connector between the keyboard and screen. I've taken mine to get checked by a "phone doctor" and they told me that. I will tell you this now ,since it is still in the early stages, it's going to get worse to the point that it will stay black. Get it fixed by a techy or get a replacement soon. Mine reached it's point today and I am going to need to get it fixed. Hope it helps.
Johnny2293 said:
I have the droid 3 and the same exact thing is happening to me. Sorry to tell you this but it has to deal wit the connector between the keyboard and screen. I've taken mine to get checked by a "phone doctor" and they told me that. I will tell you this now ,since it is still in the early stages, it's going to get worse to the point that it will stay black. Get it fixed by a techy or get a replacement soon. Mine reached it's point today and I am going to need to get it fixed. Hope it helps.
Click to expand...
Click to collapse
Doesn't sound good man :-(......
Though it happened a lot the passed days since the reset ( knock on wood) only once. Do wonder why it happens less now.
Yea you can reset all you want it's going to go blank. I had to right the dial pad numbers with marker on the screen just to make calls. I say get it fixed or replaced soon
I've got the same issue here. I know the thread is old, but I'm from the Netherlands (just like eezdva) and would like to know how to repair this.
lucaspr said:
I've got the same issue here. I know the thread is old, but I'm from the Netherlands (just like eezdva) and would like to know how to repair this.
Click to expand...
Click to collapse
If you can't take it back and want to try to fix it yourself you need to search for a droid 3 flex cable. The one you want has the front facing camera, front sensors and earpiece speaker on it. Then head on over to ifixit for a teardown guide (sorry no repair manual yet, I plan on working on one).
I have to add that taking this phone apart to replace this part is no small feat, and it would probably be better finding a phone doctor to do it for you, or just getting a new phone.
When you buy the part, request an OEM part, I have been sent cables where the front facing camera displays sideways, or doesn't work at all. Most also don't come with the front button deflector, and that has to be transferred from the old cable.
Hope this helps
Ok . Well I don't really know what the problem is. But it went away. Actually it started I think after applying the update . I got myself another external sdcard . At a certain moment I decided to remove it and things cooled down. It now actually never happens anymore.
Well I gues you're lucky!
My screen sometimes starts all scrambled and the phone doesn't power on. Sliding the screen a couple of time sometimes helpes, but most of the time I don't really know howto get the phone working again. I think it's more stable when I leave the phone 'slided out' (don't know the right word now).
And I searched Motorolas website and found 2 reparing companies in the Netherlands. They both are authorized by Motorola, as of such I think this repair will be in warranty.
I do have to send it for repair. I don't want to take it apart because of what bitz_dv said. I'll let you know!
No Fix
When I was gone on a short holiday my college got a call from the 'authorized' motorola repair center. They can't fix my phone. I need to pay 11 euro to get it back and that's it. I tried calling them but there was no answer.
I sended my phone in on 22 may 2012 and now they decided they can't repair it. I spoke to Ted from Negri Electronics who told me to get in touch with Motorola as my warranty is still valid.
I'm a little confused, where should I go if an official repair center can't fix my phone but do tell me the repair is within warranty..
What can I do? Besides ordering the parts and take the phone apart myself..
I started my search for the flex cable... I did repair a N97 once, within the warranty period and later on sended it in and they repaired it under warranty....
Is this the cable I'm searching for:
http://www.globaldirectparts.com/Motorola-Droid-3-XT862-Motherboard-Flex-Ribbon-p/mot1040660.htm
I am from Netherlands, and have the same problem with the screen, looks like many users from Netherlands do.. coincidence?
When i jst slide out the keyboard , a little bit is enough, and the screen goes black ( black screen of death ) it doesnt power on with power button.
I looked for a flex cable at ebay, and it surprised me , that cable is also doing the front camera, and speaker... My front camera wasnt working too, and speaker made strange sounds many times, so it could be that cable, but not sure.
Check my thread, i have also uploaded a video to make it more clear
http://forum.xda-developers.com/showthread.php?t=1955892

Z3C temporary dead?

So I got my Z3C about a month now. 6 weeks ago I thoughed my phone broke, suddenly it was dead. It looked like it was bricked, but I didn't do anything with it. There was no charging light, no fibrating on a hard reset, nothing. There was not even a connection with the adb.
So I send it to a repair point and they fixed it for me. I had no idea what that do, but I was happy with it.
Yesterday it happend again and I was pretty angry. A 3 month phone broke twice! I contacted the store, because I want a new one and not another repair, because i have no faith in another repair.
Now here comes the thing. Today I tried my phone again and suddenly it was working again.
You might think I should be happy, but I'm absolulty not, because now it is hard to prove there is something wrong with my device.
I suspect the repairpoint didn't fix anything, because it was working again at that point. So they just did a factoryreset
Has anyone experienced something like this or has any clue what the problem is?
Thanking in advance.
Info
Robin94 said:
So I got my Z3C about a month now. 6 weeks ago I thoughed my phone broke, suddenly it was dead. It looked like it was bricked, but I didn't do anything with it. There was no charging light, no fibrating on a hard reset, nothing. There was not even a connection with the adb.
So I send it to a repair point and they fixed it for me. I had no idea what that do, but I was happy with it.
Yesterday it happend again and I was pretty angry. A 3 month phone broke twice! I contacted the store, because I want a new one and not another repair, because i have no faith in another repair.
Now here comes the thing. Today I tried my phone again and suddenly it was working again.
You might think I should be happy, but I'm absolulty not, because now it is hard to prove there is something wrong with my device.
I suspect the repairpoint didn't fix anything, because it was working again at that point. So they just did a factoryreset
Has anyone experienced something like this or has any clue what the problem is?
Thanking in advance.
Click to expand...
Click to collapse
first of all you should make it clear If it s software problem (which level of software) or hardware
to get this u can Repair Xperia firmware by PCC to install fresh firmware
after that if problem remains u can be sure that problem is in hardware and ask for replace
in repair center they may just install new rom and return it so just ask for replacement
:good:
I k now this post is a little old but I have the same problem. After 6 weeks of flawless use my Z3C suddenly died. Nothing would bring it back to life. I spent several hours on the phone to sony support to no avail. We tried numerous manual and computer related fixes to no avail (including flashing a new stock rom which didn't work because no phone could be detected). Finally the tech gave up and said to return to return it to where I bought it. I was in the process of doing that when suddenly the phone worked again when I pressed the power button. battery charge was showing as 74%. Unfortunately I didn't do a factory reset while I had the chance.
This afternoon I didn't use the phone for 3 hours and now it's dead again. Nothing will wake it up again.
To me it sounds like a hardware fault, not software. This is a near new phone. This shouldn't be happening. I've searched the net and found numerous others having the same problem and in every case it has resulted in a replacement phone. Unfortunately my phone seller is a long way away. I guess that will teach me to buy local and pay and bit more.
Any suggestions please as I'm desperate.
I'm also in the same boat where my g/f Xperia Z3C just died and unfortunately the phone is out of warranty as it was a grey import and not local Aussie stock.
I have tried everything to get it working. When it does switch on it doesn't last more than a few hours before it goes back to a permanent coma.
I've wiped the rom and started from scratch when it was working with the Sony Xperia Repair centre but with little success.
I was left with little choice but to take it to a repair centre to find any faults with the hardware but I'm not feeling that confident they can fix the phone without replacing the whole board which isn't worth it.
Same thing.
Hello,
Today my phone shut downs itself and i realized it after 2-3 hours.Can't force reboot with volume up + power or the yellow button near the sim slot.Also no leds working to confirm if it takes electricity or not.My phones screen changed about a month ago due to having volume changes in 3.5 mm jack while listening music.Funny thing is i gave my phone for that same reason 8 months ago and they did not changed the screen and when i asked why you changed the screen, the lady said because 3.5mm jack is together with the screen(which i do not believe).I am hoping for device to wake up like jesus...
Edit: Does android have a log that reports every incident like windows does?If so how can i access it to see why my phone decided to die and ressurected by itself?I can't get this device to technical service cause it is fine now but i want to make sure it does not happen again.

Xperia Z confusing problems, please Help me.

Hello !
A few weeks ago my XZ fell down and the display (glass,lcd,touch) was broken so i had to fix it. I decided to fix it by myself, i bought a display and started to do it on my own. Everything went fine. After I finished i wanted to charge my phone and the red (bright) led was on. I knew, that this was the symbol for charging so i was happy and waited a few minutes. But my phone never went on, there was no Sony Logo, no battery logo, nothing, no vibration. I decided to take another look into my phone, and checked if anything wasn't right reconnected, but everything was correctly. With still no success i thought, the battery was dead (because it lay down about 4 weeks with no power) and ordered a new battery. I inserted the battery, but all i got was this damn constant red light. (at the beginning its a bright light and then switches to a darker light).
I read about 5 Million forums and got in contact with flashing my device. First i tried it with the Companion (no success), later with flashtool (no success).
All i have to say is that, i dont even now if my screen is working, i easily come in fastboot/flashmode and i'm definitly at the end of my possibilities. I need someone's help, and if you say my phone is completely damaged, then please say, so i can stop working on this matter and sell it!
Thank you very much, and sorry for the long read.
Giasab said:
Hello !
A few weeks ago my XZ fell down and the display (glass,lcd,touch) was broken so i had to fix it. I decided to fix it by myself, i bought a display and started to do it on my own. Everything went fine. After I finished i wanted to charge my phone and the red (bright) led was on. I knew, that this was the symbol for charging so i was happy and waited a few minutes. But my phone never went on, there was no Sony Logo, no battery logo, nothing, no vibration. I decided to take another look into my phone, and checked if anything wasn't right reconnected, but everything was correctly. With still no success i thought, the battery was dead (because it lay down about 4 weeks with no power) and ordered a new battery. I inserted the battery, but all i got was this damn constant red light. (at the beginning its a bright light and then switches to a darker light).
I read about 5 Million forums and got in contact with flashing my device. First i tried it with the Companion (no success), later with flashtool (no success).
All i have to say is that, i dont even now if my screen is working, i easily come in fastboot/flashmode and i'm definitly at the end of my possibilities. I need someone's help, and if you say my phone is completely damaged, then please say, so i can stop working on this matter and sell it!
Thank you very much, and sorry for the long read.
Click to expand...
Click to collapse
Bro i think the problem is with your display. I think it not installed properly.
Ess Arr said:
Bro i think the problem is with your display. I think it not installed properly.
Click to expand...
Click to collapse
Are you sure ? Because i followed a video and it was very easy.. but somehow you could be right. I will check another video and going to do it again. Thanks for your advice.
Same problem is here but vibrations are there
Sent from my condor using XDA Free mobile app
---------- Post added at 04:47 PM ---------- Previous post was at 04:46 PM ----------
PlZ help
Sent from my condor using XDA Free mobile app
Maybe motherboard got damaged or check the connections
I checked again my inner phone and, okay im new in fixing phones, but it seems to me that nothing got damaged, everything looks fine, the flex bands don't look different as they are shown in the videos. The connections are 100 % connected. But i have to admit: New battery -> not working, check connections -> all are stable , PC companion repair -> nothing. After all i think i destroyed something but i cant figure out what. On Monday i'll go to a repair shop and let them check what's the issue. If somebody has another idea, please let me know, i will try to repair it then.
Giasab said:
I checked again my inner phone and, okay im new in fixing phones, but it seems to me that nothing got damaged, everything looks fine, the flex bands don't look different as they are shown in the videos. The connections are 100 % connected. But i have to admit: New battery -> not working, check connections -> all are stable , PC companion repair -> nothing. After all i think i destroyed something but i cant figure out what. On Monday i'll go to a repair shop and let them check what's the issue. If somebody has another idea, please let me know, i will try to repair it then.
Click to expand...
Click to collapse
hi , maybe try to boot into fastboot or flashmode and see if flashtool detects them
danishaznita said:
hi , maybe try to boot into fastboot or flashmode and see if flashtool detects them
Click to expand...
Click to collapse
Hey thanks for answering! As i mentioned in my starting post, my PC detects my phone without any problem. I also used PC Companion to repair my phone. So i dont think it's a software matter. Also Flashtool detects my phone, i could even install a new software.
But i gave my phone today to a repair shop, they'll analyse the problem... for 20€.
I'll tell you what exactly is damaged in a few days if somenone has the same problem like me.
I destroyed the Display Connector. Sold my phone for around 40 euro. -.-

Dead screen ?

My phone's screen just went black suddenly while i was using the phone last night. Nothing i do will wake the screen up, i tried rebooting by holding the power button, tried power+volume down also to boot into recovery .. no response. However the phone seems to be functioning as i can hear the screen lock sound. I think im stuck on the pin screen (the one to pass the boot-up-encryption). theres some vibration and feedback when i randomly press on the screen too.
The device is running Stock 6.0.1 , unrooted , stock kernel. Has this ever happened to anyone else ? could it be a software issue ?
I believe the LCD panel just went dead ..
Thanks!
Have you hooked it up to a computer and tried to see if it's recognised by ADB?
moses992 said:
My phone's screen just went black suddenly while i was using the phone last night. Nothing i do will wake the screen up, i tried rebooting by holding the power button, tried power+volume down also to boot into recovery .. no response. However the phone seems to be functioning as i can hear the screen lock sound. I think im stuck on the pin screen (the one to pass the boot-up-encryption). theres some vibration and feedback when i randomly press on the screen too.
The device is running Stock 6.0.1 , unrooted , stock kernel. Has this ever happened to anyone else ? could it be a software issue ?
I believe the LCD panel just went dead ..
Thanks!
Click to expand...
Click to collapse
I had a nexus that had a faulty screen and randomly shut off or something half the screen will glitch out and one day it just stopped working but I could hear the lockscreen sounds. Your best bet would be to send it in for service maybe its a loose connecting or a hardware issue. When mine started acting up it was a loose connecting so if I hit the phone with my hand it would go back to normal and then it stopped working. Its a common issue if you do a google search many people have encountered this
That sounds to me like a return-under-warranty job. If you were in the UK you could quote the Sale of Goods Act, which specifies that an item must be of suitable quality and last a reasonable amount of time, but in my case when I returned my faulty N5 to Google after 18 months they were as good as gold, didn't quibble, simply replaced it with a refurbished one which appeared to me to be indistinguishable from brand new.
Since by definition your phone must be very close to its warranty period, depending on when you got it, I'd start with that. This is the link I used from the UK - maybe different if you're elsewhere, but you should find a link called "Get a call from a hardware specialist":
https://support.google.com/store/co...roid_help&cfnti=escalationflow.c2c&cft=5&rd=1
Didgeridoohan said:
Have you hooked it up to a computer and tried to see if it's recognised by ADB?
Click to expand...
Click to collapse
Havent done that yet. Only thing that would be good for is making sure its a hardware defect right ?
jazz995756 said:
I had a nexus that had a faulty screen and randomly shut off or something half the screen will glitch out and one day it just stopped working but I could hear the lockscreen sounds. Your best bet would be to send it in for service maybe its a loose connecting or a hardware issue. When mine started acting up it was a loose connecting so if I hit the phone with my hand it would go back to normal and then it stopped working. Its a common issue if you do a google search many people have encountered this
Click to expand...
Click to collapse
That makes sense. could be just a loose connector between the LCD panel and the MoBo ..
Problem is i live in Jordan and I got the phone from Dubai. Its still under warranty of the seller (Souq.com ; an online store .. kind of like Amazon of the middle east ), So i have to send my phone to Dubai to fix it. Now i could just go to a local phone repair shop and ask the guy to check the connectors, but im afraid that would void the warranty and not solve the problem ;( .
dahawthorne said:
That sounds to me like a return-under-warranty job. If you were in the UK you could quote the Sale of Goods Act, which specifies that an item must be of suitable quality and last a reasonable amount of time, but in my case when I returned my faulty N5 to Google after 18 months they were as good as gold, didn't quibble, simply replaced it with a refurbished one which appeared to me to be indistinguishable from brand new.
Since by definition your phone must be very close to its warranty period, depending on when you got it, I'd start with that. This is the link I used from the UK - maybe different if you're elsewhere, but you should find a link called "Get a call from a hardware specialist":
https://support.google.com/store/co...roid_help&cfnti=escalationflow.c2c&cft=5&rd=1
Click to expand...
Click to collapse
I submitted the form , although i live in Jordan which has no presence of Google whatsoever but what the heck !
thanks all for your suggestions.
Google is supposedly a global company...
Let us know how it goes, and good luck.
Well, if you figure out that it is just the screen, you can use this program for basic control with a lot of latency
http://forum.xda-developers.com/showthread.php?t=2786395
It's a little rough and confusing but, it's workable. If you need help setting it up feel free to shoot me a PM.

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