display dimmer chip location - Sony Xperia ZR

My C5503 with rooted 4.4.4 has stopped responding to changing brightness (even manually, not just the adaptive brightness feature). I tried reset to factory defaults, install third party apps (e.g. Brightness Level) but nothing helped. It seems it's hardware failure.
Don't you know where's the HW chip that controls the brightness located? I'm asking because I wonder whether buying new LCD would fix the issue.

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[Q] Backlight issue

We just picked up a used Droid for the dev department to play with. The backlight comes on during boot up but goes off as soon as it gets into the OS. Settings appear to be normal (full brightness). Any ideas?
hard reset didn't help. The backlight goes off at the exact moment the buzzer announces the os startup. (if that makes sense)
try using other roms..
Working on rooting and loading a rom right now. I took the phone home with me and discovered the backlight isn't out just very dim. It will change slightly when I move the brightness slider around.
OK, it's now running Steel Droid with the same issue. I have a bright screen in recovery and during boot and a very dim one once booted.
try to un-check the automatic brightness, and set it to full brightness...
if that doesnt work... might be a hardware related problem...
Did that already. Seems like an odd hardware issue. I have full backlight in recovery and during boot.
Here is a video of the issue http://www.youtube.com/watch?v=RxHqN_lycG8
Stupid question: do you have auto-brightness active? If so, maybe your light sensor could be broken.
downloadman said:
Stupid question: do you have auto-brightness active? If so, maybe your light sensor could be broken.
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Auto-brightness is unchecked and the brightness is set to max. There is a very slight change to the brightness when I adjust the slider back and forth.
BTW. It is currently running CM7 with the same issue.

Screen brightness bug?

I just got my XZ1 Today and straight away upgraded to 4.3.
I am having problems with the brightness, I have turned the 'adapt to lighting' setting off, but each time i go to my home screen my screen brightness goes down, it also does the same when I go to the last page of the app draw. This also occurs when starting games, the brightness will go down in the loading screen and then go normal when the game starts.
Is this a bug/issue, or is this meant to happen? If its the former, is there a fix
Sorry if this sounds newbie
Thanks,
Alex
Sent from my C6903 using xda app-developers app
I don´t think that this is normal !!! Maybe you should do a factory reset: settings ----> Backup&Reset ----> Factory data reset Before doing this you should save your data, e.g with pcc (PC Companion) Hupfully I could help you
PS: Next time questions please in the Q&A section please
I think it's normal, this option is called something like "Optimized Backlight". It could be turned off in one of the earlier firmwares, but that caused random reboots so Sony decided to make it an always-on option and removed the entry from the menu.
Optimized Backlight adapts the brightness according to the displayed content, the more crowded and vivid the picture is the brighter the backlight gets.
OfficerTux said:
I think it's normal, this option is called something like "Optimized Backlight". It could be turned off in one of the earlier firmwares, but that caused random reboots so Sony decided to make it an always-on option and removed the entry from the menu.
Optimized Backlight adapts the brightness according to the displayed content, the more crowded and vivid the picture is the brighter the backlight gets.
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Click to collapse
I forgot about this Option, but in my case I can not notice any brightness differences in many situations
I did not like the stock brightness controller so I have installed Lux Auto Brightness from google play and its working perfectly

HELP! Auto Rotation Problem!

hi guys. i recently replaced my cracked screen and after that i noticed that the auto rotate function isn't working properly. some times it's ok but sometimes like when i go to camera, and when I come back to menu, the screen is Locked on landscape mode and the only think I can do is to lock the device and unlock it to make the screen portrait.and after that i cant change the screen orientation att all unless i restart the phone.
Mostly the screen has a light that only noticeable in the quite dark place when the auto screen light is on after turning off the screen.
i had some problems with ambient light sensor and proximity sensor as well.
i once wiped the data i was thinking maybe it's a software problem but nothing changed
is it really a hardware problem? is the board or any parts damaged during the replacement?!
Same problem Here
I have the same problem, but it is with ambient light sensor and the proximity switch, when i go to the service menu (*#*#7378423#*#*) the proximity switch does not show up, when i press ambient light sensor it says ¨This device does not support this function¨.
This phone i just bought it a few this ago, i tried reseting customization, wiping data, flash another rom, Root... everything and no answer.
If u wipe and flash and still have the problem it is possible you have a hardware problem. Check all of ur water damage indicators to see if they are red. Also you could tell us your model.

[Q] Autobrightness Problem

Hi, got an HTC one recently but i'm having problems with autobrightness seems like the low brightness setting for for phone turns screen completely off. I went to brightness setting manually and drag the slider to the lowest point but the screen will completely turn off just before it reaches the last point so i downloaded lux from the store and checked it the screen while turn off below 15 lux. So my question is, is this a hardware defect or can i install firmware or anyother software to calibrate the light sensor? thanks guys.

LiveDisplay's RGB Color Calibration on the fly

Recently I've had my phone display repaired and the very first thing I noticed was that the brightness on the replacement display was not working. I tried wiping data/changing ROMs and confirmed that it really is hardware related.
My solution is to use LiveDisplay Color Calibration from LOS. What is does is basically reduce the screen "brightness" by reducing the RGB values. It does a relatively good job at preventing my eyes from drying out at night.
Now, the problem is that everytime I need to increase/decrease the brightness, I need to manually go deep into Settings to adjust it. Is there any Tasker profile to let me adjust those values on the fly? Or at least to profile a low-brightness value on one tap?
I found a thread on r/tasker that is close to my problem, but isn't really doing anything. Any help would be greatly appreciated.
axljohn said:
Recently I've had my phone display repaired and the very first thing I noticed was that the brightness on the replacement display was not working. I tried wiping data/changing ROMs and confirmed that it really is hardware related.
My solution is to use LiveDisplay Color Calibration from LOS. What is does is basically reduce the screen "brightness" by reducing the RGB values. It does a relatively good job at preventing my eyes from drying out at night.
Now, the problem is that everytime I need to increase/decrease the brightness, I need to manually go deep into Settings to adjust it. Is there any Tasker profile to let me adjust those values on the fly? Or at least to profile a low-brightness value on one tap?
I found a thread on r/tasker that is close to my problem, but isn't really doing anything. Any help would be greatly appreciated.
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Click to collapse
Test the sensor light under the screen
qitecko said:
Test the sensor light under the screen
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I'm not sure what you meant by that but my phone doesn't have a light sensor.

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