Backiight Not working - Sony Xperia ZL

While changing the battery, the backight of my mobile has gone. I can see the display in very bright light touch is also working fine. Any remedy so that i can fix it as service centre refused to repair as it is out of stock long time ago.

Related

Device crashes after use and locks screen

I have a problem with my Tmob MDA Compact III. After using my device for whatever reason, I will come back to it after a few minutes to find that I cannot turn it back on. That is, the screen has turned off as expected, and normally the green flashing led is flashing intermitantly as normal. However pressing the power button has no effect in turning the screen back on. I have checked re battery issues and that seems fine, however this does not happen when it is plugged into the mains. The only way to get back into the device is to remve the battery and turn it back on. I have found when doing this however that the device is far sower to reach the main WM Today screen, especially on the screen prior to the Windows 'loading' screen. I have found that sometimes the screen is not off, but actually dimmed, very low and a dark navy in appearence. Again, the only way to regain control is to remove the battery.
I am running WM6 (standard fro TMob) and have only ran the offical ROMs on it. I've not tinkered with the internals at all! I have performed a hard reset of the device hoping that this would resolve this issue but unfortunatly this still continues.
I'm stuck now and desperatly after help. Cant afford a new phone and contracts not up for ages yet.
Help!!
Welshgaz
Send it back
Have you considered ringing 150 from your T-Mobile handset and arranging to have the phone sent for repair. I think if you are within your contract you are within your warranty so to speak. T-Mobile will then send it to HTC who will look at the device and see if the problem is covered by warranty or not.
If the issue is outside warranty for whatever reason they will tell you this and quote you cost of repair.

Flash-LED not working anymore

Hi,
the LED flash of my DHD isn't working any more. Whenever it should appear (flashlight app, camera app) it just keeps off. The error suddenly - I was using the app one day and the next one it chose to stay dark.
Unfortunately there is no warranty left on the device.
Do you have any idea what the problem might be? I installed a new LCD screen some time ago. Maybe it's a loose cable or connector that is causing this issue?
Thanks in advance!

[Solved] HTC Desire Vibrator Bug!?

Hello. My problem is with the phone's vibrator. 2 or more weeks ago I got the same problem, when I dropped my phone from the bed tot the floor (aprox. 40 cm height), it stopped vibrating for feedback, messages and calls. At that time, I thing I either turned it off and removed battery or just do a reboot, but it started working again until 3 day ago. Since then it stopped working completely. I tried turning it off, reboot, removing the battery for 15 min., nothing worked. I have no vibration feedback (for example when I type a phone number or message), no message receiving vibration, no incoming calls vibration and not even when I turn on/reboot the device does my phone vibrate(it was a small vibration when you turned on the phone). Today I thought I should first try to change my ROM prior to trying to replace the faulty vibrator, but when I selected to reboot to recovery, my phone rebooted and vibrated at the beginning, so I thought the bug is gone. I went back in to the phone and I had: vibrate feedback (typing a phone number), message vibrate, didn't have time to test the call vibration because after I received 2 messages the vibration stopped once again. So now I'm baffled: is it because of the ROM, is it a glitch/bug from the motherboard or is the vibrator almost "dead"? If anyone had this issue and can help me fix the bug I would be really thankful. If I have to replace the vibrator, it wouldn't be a hard thing to do and I would do it if I know this will fix the problem forever.
My phone is S-OFF, rooted, with AcesMod007 ROM. Thank you.
I have installed CM10 | Jelly Bean 4.1.2 - v2.8 by vijendrahs and still no vibration, so it must be from the motherboard or the vibrator itself. I might try to replace it and see if this solves the problem.
No one has encountered this problem until now? No thoughts on this? I've searched for this bug and found some applications that should remove this bug, but they didn't work for me, so I am still open to any suggestion. I still have to wait up to 3 weeks until the vibrator arrives.
L.E.: I've just noticed another anomaly: my phone jumps from 82%-85% battery to full when I'm charging it. Might this have something to do with the vibrator? How can I fix this problem? Thanks.
Tried all kinds of applications that would force the vibrator, but with no success. I am still looking for a solution.
I have no guarantee so I have to fix it myself. I saw that other peoples with the same problem had sent the phone back to HTC for a replace. One of them actually stated that HTC had replaced first the motherboard (with no success) and then the vibrator module. I hope that replacing the vibrator would solve the problem.
I've solved the problem. I decided to open it up, thinking it is a hardware problem, and take a look at it. I've blended the two legs a bit more to make sure they get a perfect connection to the the motherboard and voila. It is working fully.

Phone working but screen black

Hello everyone,
I have since the first time an LG G3 (D855) that I root and that works very well.
Recently I bought a new one from a friend for my girlfriend.
He never root it, he reset it and sent it to me by mail.
At the reception, I turn on the phone and there, I have the LED lights, sound start but nothing on the screen.
It reacts when I put the finger on the screen so the touch sensor works.
I try a restart and battery removal but nothing better.
The screen has no shock but I told myself that perhaps during the trip he took a bad cut.
I hope it's just a miswired table, so I dismounted to check, but still nothing.
ThenI try something, I disconnect my phone too and I swapped motherboards.
And then the screen with my card in it work.
While my screen with the motherboards of the phone I just bought stay blank.
So the screen is not broken, perhaps it was a install problem.
So I use LG Flash Tool to reinstall the original rom (following a tutorial )
Everything goes well and ends without worries.
But that didnt change anything, the screen is still black.
Do you have an idea ?
Thank you in advance for your assistance and sorry for my bad english
I just realized that if I strongly illuminates the screen I can see that it works.
It' like brightness was at zero.
It's not a screen problem because when I plug it to the other motherboard brightness is ok.
Someone had this issue?
Same problem here
So I'm having the same problem at the moment, but this is the 2nd time that this has happened to me. Last time. I fixed it by changing charger. It worked for like 2-3 month and then I switched again and the problem came back. I suggest you try a few charges. It took around a week before it got fixed.
Hope it'll work for you.
BTW it was a Nokia charger
Black screen G2 after some seconds even during boot...
EtreRe said:
I just realized that if I strongly illuminates the screen I can see that it works.
It' like brightness was at zero.
It's not a screen problem because when I plug it to the other motherboard brightness is ok.
Someone had this issue?
Click to expand...
Click to collapse
Exactly the same problem on my LG G2.
It often go to black screen, but it's not totally OFF. Touch work, and the screen the same, i noticed using a torch that the brightness when to something like zero, but if i increase the level, it stay dark. Only press power button sometimes come back, but few second later... Dark screen again.
It happens everywhere during boot, in home, in lockscreen, in TWRP.
I tried:
- Change rom
- Flash stock firmware...
- Totally switched off for 2 months
- Detach and reattach the screen
- Test proximity sensor in hidden menu
Nothing worked.
If anyone has an idea...

OnePlus 3 issues

I'm having the following issues with my OnePlus 3 (stock recovery, no root):
15 November: last known date without any issues
16-18 November: when I played games I noticed that screen won't rotate even when auto rotate was ON
19 November: I wanted to click some pictures when the camera app just stopped working
Tried rebooting and clearing cache, but didn't work
Thought a software update might fix these problems
20-27 November: when I answered calls the screen won't turn off. That's when I realized that all the sensors on the phone had stopped working (no lift up display, motion sensors,etc). Read online that I could get the official Oreo update just by changing my VPN to Germany/Canada. So I did the same and upgraded to Oreo
Still the issues were there and battery drain was significant. The phone would reboot on its own.
On contacting OnePlus support they asked me to do a hard reset which seemed to work only for 3-4 days
28-29 November: the sensors stopped working again & again and I did a hard reset every time
In the end the phone switched off and the white notification light was on continuously. Pressing or holding the power button didn't work. Contacted support
2 December: through a remote session the OnePlus support installed Oreo again and on rebooting I got DM-VERITY error. So the support asked me to visit a Service Centre
3 December: I visited the SC where they concluded it was a hardware issue (motherboard: 17000/-) so I asked them to just roll back to OOS 4.5.1. Worked fine for 10-11 days
14 December: started rebooting randomly. Noticed that the phone would hang and reboot when using the camera (in WhatsApp, CamScanner and stock camera), maybe I'm wrong.
So now there's minimal usage of a phone with such high capabilities knowing that I'll have to do a hard reset once a week.
How can it be a hardware issue if the phone works fine for 4-5 days after a hard reset before breaking down again? What does that white notification light mean? Any help would be greatly appreciated
"3 December: I visited the SC where they concluded it was a hardware issue (motherboard: 17000/-) so I asked them to just roll back to OOS 4.5.1. Worked fine for 10-11 days"
There is your answer, there is a problem with you motherboard, you need to get it replaced, we cant diagnose a hardware problem here!
How come it works normally for a week or more if there's a problem with the motherboard?
And a hard reset seems to return the phone to its normal state.
Shmt_18 said:
How come it works normally for a week or more if there's a problem with the motherboard?
And a hard reset seems to return the phone to its normal state.
Click to expand...
Click to collapse
That just means that it is faulty and will fail after some time. This most likely means there is a bad memory sector on the board. As suggested. Get it replaced or you will keep having these issues.
Okay. Thanks for clarifying.
May I know what may be the causes for the motherboard damage? How common is it that a motherboard malfunctions?
Because there was no physical damage at all. Thanks again!
Shmt_18 said:
Okay. Thanks for clarifying.
May I know what may be the causes for the motherboard damage? How common is it that a motherboard malfunctions?
Because there was no physical damage at all. Thanks again!
Click to expand...
Click to collapse
See that is the thing. China has no real quality control standards. So it could just have been a bad board. If you look around you will see that a range of random issues seem to pop up over a short time. Yet some are just fine. Like mine. It had a faulty USB port from day one to the point that I knew it was gonna fail. (expected) So I am replacing it.

Categories

Resources