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Black Screen, Phone On, But No Backlight

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Kev_McCall
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Exclamation Black Screen, Phone On, But No Backlight

Ok so before I begin, I've read everything online and cannot figure this out. I've searched the forums for hours and still no luck.

I have the HTC One M7 with T-Mobile

I've had it since December with no issues at all, and still in mint condition. Never dropped.

I have it rooted, with boot unlocked

ViperOne ROM Installed, stock kernel.


Ok so Tuesday night I was going to bed (phone still on and working) and plugged my phone in to the charger to charge for the night as I usually do every night. Wake up in the morning and hit the power button to unlock the phone and to my surprise the display doesn't come on. As I said I've never dropped this phone in the entire 9 months I've had it, nor has it ever gotten wet.

This is NOT the first time this has happened either. I've had the phone display flicker on/off and after a couple times it will just stay on. It's also went off and I've fixed it by holding a light to the sensor in the top left and it came on. This time I'm not having any luck.

Please help! It's rooted, with custom ROM, and boot unlocked, therefore I cannot send it in for repair as warranty is voided. I've tried restoring it back to stock the best I can via mirror Android to PC program, but it's very difficult. I've restored it once before, I just don't get why it's not working again with me holding the light to the sensor. Any help and/or suggestions would be greatly aprreciated!! Thank you!
 
zelendel
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Quote:
Originally Posted by Kev_McCall View Post
Ok so before I begin, I've read everything online and cannot figure this out. I've searched the forums for hours and still no luck.

I have the HTC One M7 with T-Mobile

I've had it since December with no issues at all, and still in mint condition. Never dropped.

I have it rooted, with boot unlocked

ViperOne ROM Installed, stock kernel.


Ok so Tuesday night I was going to bed (phone still on and working) and plugged my phone in to the charger to charge for the night as I usually do every night. Wake up in the morning and hit the power button to unlock the phone and to my surprise the display doesn't come on. As I said I've never dropped this phone in the entire 9 months I've had it, nor has it ever gotten wet.

This is NOT the first time this has happened either. I've had the phone display flicker on/off and after a couple times it will just stay on. It's also went off and I've fixed it by holding a light to the sensor in the top left and it came on. This time I'm not having any luck.

Please help! It's rooted, with custom ROM, and boot unlocked, therefore I cannot send it in for repair as warranty is voided. I've tried restoring it back to stock the best I can via mirror Android to PC program, but it's very difficult. I've restored it once before, I just don't get why it's not working again with me holding the light to the sensor. Any help and/or suggestions would be greatly aprreciated!! Thank you!

Well issues like this are common with custom roms. You would need to pull a log cat or DSM message and send it to the developers.





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majmoz
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Quote:
Originally Posted by Kev_McCall View Post
Ok so before I begin, I've read everything online and cannot figure this out. I've searched the forums for hours and still no luck.

I have the HTC One M7 with T-Mobile

I've had it since December with no issues at all, and still in mint condition. Never dropped.

I have it rooted, with boot unlocked

ViperOne ROM Installed, stock kernel.

If you are not S-OFF, then you will have to relock your bootloader with this command: fastboot oem lock
Then run this RUU 5.14.531.11 That will put you back at stock and if you want to put a custom rom or root you can try it again.
The best way to get me to reply is to quote or mention me @majmoz

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Useful links:

nkk71's SuperGUIDE to returning 100% back to stock
HTC 1 Guru by crushalot
[Collection] HTC One Stock Recoveries
 
Kev_McCall
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Originally Posted by zelendel View Post
Well issues like this are common with custom roms. You would need to pull a log cat or DSM message and send it to the developers.
Thanks for the reply, so how would I go about pulling log cat and DSM?
 
Kev_McCall
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If you are not S-OFF, then you will have to relock your bootloader with this command: fastboot oem lock
Then run this RUU 5.14.531.11 That will put you back at stock and if you want to put a custom rom or root you can try it again.
Thanks man! I've tried other RUU's with no luck. So just to be certain, in order to flash an RUU, you need S-Off wit Bootloader locked? Is it not possible to flash RUU with S-On? Going to do this now. I'll let you know. I'll keep you guys updated. Feeling good about this.
 
majmoz
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Originally Posted by Kev_McCall View Post
Thanks man! I've tried other RUU's with no luck. So just to be certain, in order to flash an RUU, you need S-Off wit Bootloader locked? No, if you S-OFF you can leave it unlocked.
Is it not possible to flash RUU with S-On? No, if S-ON you can only flash it if your bootloader is locked and the same OS version or higher.
Going to do this now. I'll let you know. I'll keep you guys updated. Feeling good about this.
See comments above.
The best way to get me to reply is to quote or mention me @majmoz

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nkk71's SuperGUIDE to returning 100% back to stock
HTC 1 Guru by crushalot
[Collection] HTC One Stock Recoveries
 
Kev_McCall
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See comments above.

Ok so I succesfully Installed the RUU and back to stock rom, but upon rebooting, my screen did not turn back on. I've read of dozens of other users who have experienced this same thing. I guess the next step would be to fully return it to stock, turning S-On, removing tampered, unrooting, etc, and just returning it for another phone. @majmoz
 
majmoz
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Originally Posted by Kev_McCall View Post
Ok so I succesfully Installed the RUU and back to stock rom, but upon rebooting, my screen did not turn back on. I've read of dozens of other users who have experienced this same thing. I guess the next step would be to fully return it to stock, turning S-On, removing tampered, unrooting, etc, and just returning it for another phone. @majmoz
If you successfully ran the RUU, then you are stock with a relocked bootloader. The downside is you have to be S-OFF to remove the tampered and to change the "relocked" to "locked".

If you are S-OFF, then you would have to put TWRP 2.6.3.3 or 2.7.1.2 and install this Bootloader Reset Tool. Then flash a stock recovery. You are now completely back to stock.
The best way to get me to reply is to quote or mention me @majmoz

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Useful links:

nkk71's SuperGUIDE to returning 100% back to stock
HTC 1 Guru by crushalot
[Collection] HTC One Stock Recoveries
 
Kev_McCall
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Originally Posted by majmoz View Post
If you successfully ran the RUU, then you are stock with a relocked bootloader. The downside is you have to be S-OFF to remove the tampered and to change the "relocked" to "locked".

If you are S-OFF, then you would have to put TWRP 2.6.3.3 or 2.7.1.2 and install this Bootloader Reset Tool. Then flash a stock recovery. You are now completely back to stock.
Yea. I turned S-Off before I even ran the RUU. So there's one thing I'm confused about. If I'm trying to return to complete stock state, why would I install Twrp or CWM if those don't come with it? Is there any other way to do this? As I have no back-light and it's been very hard to do all that I've done so far. Screen hasn't come on, so I'm working blind here. Lucky for me I remember where most of the buttons are at and with the help of ADB, I've gotten this far. @majmoz
 
majmoz
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Originally Posted by Kev_McCall View Post
Yea. I turned S-Off before I even ran the RUU. So there's one thing I'm confused about. If I'm trying to return to complete stock state, why would I install Twrp or CWM if those don't come with it? Is there any other way to do this? As I have no back-light and it's been very hard to do all that I've done so far. Screen hasn't come on, so I'm working blind here. Lucky for me I remember where most of the buttons are at and with the help of ADB, I've gotten this far. @majmoz
Yes, look at nkk71 guide in my signature he has the steps in post 3 or 4. I'm away from the house so I can't post the link.
The best way to get me to reply is to quote or mention me @majmoz

If I was of help to you, please click the "Thanks" button!

Useful links:

nkk71's SuperGUIDE to returning 100% back to stock
HTC 1 Guru by crushalot
[Collection] HTC One Stock Recoveries

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