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Screen backlight wont turn on

Hey,
I accidently dropped my phone in water a couple of days ago. The backlight doesnt work. Under a really bright light i can see the lock screen and it still functions. Is it possible to replace just the backlight? or what should i do? I dont believe this would be covered from motorola and I live in canada got the phone shipped from the states.
Any advice would be appreciated.
Thanks,
James

I'm guessing you might need a new screen/display. Perhaps do a search and find a repair place you can ship it and get an estimate? I know HTC offers such repairs dirctly (ship the phone, they call you with an estimate). I'd bet Moto does as well if you're not comfortable with 3rd party repair.

aznproto said:
Hey,
I accidently dropped my phone in water a couple of days ago. The backlight doesnt work. Under a really bright light i can see the lock screen and it still functions. Is it possible to replace just the backlight? or what should i do? I dont believe this would be covered from motorola and I live in canada got the phone shipped from the states.
Any advice would be appreciated.
Thanks,
James
Click to expand...
Click to collapse
I have the same problem right now except mine was not dropped in water. In a bright light I can see the lockscreen and also could see the emergency dialer tonight but the keyboard was not reacting on certain buttons either. One screen said to unlock enter your gmail account info,I tried to enter my name and the period symbol(.) was not working for me. I'm thinking maybe the LCD screen needs replaced or the ribbon cable,IDK. Any help is GREATLY appreciated.
Edit: Essentially I finally got logged into the phone and the keys were working fine,the screen was still dim so I turned the brightness all the way up and turned off automatic backlight. I replaced the LCD screen and digitizer and now the phone is not starting for me. I'm about to replace the Flex Ribbon Cable inside the phone and see if this corrects the problem. Right now i cant get the phone to start up so I'm thinking the ribbon cable is disconnected somewhere because it hooks to the motherboard and the LCD or the motherboard is fried. IDK,I'll let everybody know what happens with this project.

lcd not working
PS3AndroidHacker said:
I have the same problem right now except mine was not dropped in water. In a bright light I can see the lockscreen and also could see the emergency dialer tonight but the keyboard was not reacting on certain buttons either. One screen said to unlock enter your gmail account info,I tried to enter my name and the period symbol(.) was not working for me. I'm thinking maybe the LCD screen needs replaced or the ribbon cable,IDK. Any help is GREATLY appreciated.
Edit: Essentially I finally got logged into the phone and the keys were working fine,the screen was still dim so I turned the brightness all the way up and turned off automatic backlight. I replaced the LCD screen and digitizer and now the phone is not starting for me. I'm about to replace the Flex Ribbon Cable inside the phone and see if this corrects the problem. Right now i cant get the phone to start up so I'm thinking the ribbon cable is disconnected somewhere because it hooks to the motherboard and the LCD or the motherboard is fried. IDK,I'll let everybody know what happens with this project.
Click to expand...
Click to collapse
What happen to letting everyone know? Were you ever able to get it going? Was it the flex cable? How did you get the LCD working.

Replaced the flex ribbon cable and it still didnt help anything. Guess its just the phone. I trashed the phone a while ago anyways and am currently running a rooted Droid 4
Sent from my DROID4 using xda premium

[Q] Is my HTC TD2 is broken?

I just dropped my phone yesterday once and it was ok, put the battery and the lid back on, boots up everythings fine,but in the next 8 hours, I can see black dots on my screen and they are like mostly on the right side of the screen scattered all around.
Also Ive googled the problem and many people say its the digitizer, do I have to buy new digitizer now?

Kennypachi said:
I just dropped my phone yesterday once and it was ok, put the battery and the lid back on, boots up everythings fine,but in the next 8 hours, I can see black dots on my screen and they are like mostly on the right side of the screen scattered all around.
Also Ive googled the problem and many people say its the digitizer, do I have to buy new digitizer now?
Click to expand...
Click to collapse
I belive the problem is the Lcd not the digitizer,after all the digitizer is flexible plastic with with very thin wires.
The best way is to get the complete package ,lcd and digitizer, normally you can find them in ebay.

faria said:
I belive the problem is the Lcd not the digitizer,after all the digitizer is flexible plastic with with very thin wires.
The best way is to get the complete package ,lcd and digitizer, normally you can find them in ebay.
Click to expand...
Click to collapse
Thank you, im gonna go and search for them in eBay and replace them

But be carefull ,dont just buy any any screen! Apparently there is diferent screen models across the model,make sure you know the part number currently installed in your device .
I had the same problem with my Hermes, had to remove the broken screen to make sure i ordered the rigth one at the time there where 3 diferent screens for my device model but only one woud work.

Read this,it should help you,
http://forum.xda-developers.com/showthread.php?t=1006593

Thank you!

Something weird happened, I turned off the phone, took out the battery, went to sleep for 9 hours. In the morning ive put the battery back on and turned phone on and ALOT of dots have disappeared. What could have caused that?

Kennypachi said:
Something weird happened, I turned off the phone, took out the battery, went to sleep for 9 hours. In the morning ive put the battery back on and turned phone on and ALOT of dots have disappeared. What could have caused that?
Click to expand...
Click to collapse
It sounds like the liquid matrix got displaced when you dropped the device, and now it stabilized itself.
Gravity is an amazing thing
Very good news

faria said:
It sounds like the liquid matrix got displaced when you dropped the device, and now it stabilized itself.
Gravity is an amazing thing
Very good news
Click to expand...
Click to collapse
Liquid!??!?! In my phone!?!??!

Kennypachi said:
Liquid!??!?! In my phone!?!??!
Click to expand...
Click to collapse
i got liquid in my htc screen now its broken!!!

As of now, ALL dots have disappeared itself, checked on completely black and on white picture. Ordered new digitizer and screen just in case though

[Q] One X LCD Screen replacement.

So i am replacing my one x lcd screen.. bought the whole lcd and digitizer since looks like a pain to just do the digitizer.. i got the old one out, put the new one in and power up.. phone vibrates, but i dont get any sounds and no display on my screen.. i have check all my cables too many times, reseating each one, trying everything.. the other thing is once i push the power button to turn on the phone, it vibrates, makes no noises, but if i hold down the power button afterward, the softkeys start flashing several times.. do i just got a bad lcd or is it something more?

none?

3rdcoasttx said:
So i am replacing my one x lcd screen.. bought the whole lcd and digitizer since looks like a pain to just do the digitizer.. i got the old one out, put the new one in and power up.. phone vibrates, but i dont get any sounds and no display on my screen.. i have check all my cables too many times, reseating each one, trying everything.. the other thing is once i push the power button to turn on the phone, it vibrates, makes no noises, but if i hold down the power button afterward, the softkeys start flashing several times.. do i just got a bad lcd or is it something more?
Click to expand...
Click to collapse
Sorry I meant to reply to this yesterday but forgot lol
You need to sync your new LCD.
How do I do that? You may ask.
Plug your old LCD back in, dont put the phone back together, turn the phone on, while it's on, switch LCD's to the new one.
If I'm not mistaken, that should do it. Post back and let me know.

exad said:
Sorry I meant to reply to this yesterday but forgot lol
You need to sync your new LCD.
How do I do that? You may ask.
Plug your old LCD back in, dont put the phone back together, turn the phone on, while it's on, switch LCD's to the new one.
If I'm not mistaken, that should do it. Post back and let me know.
Click to expand...
Click to collapse
never heard of that before.. and unfortunately dont have the old lcd anymore.. i pulled it out a week ago before i got the new one and tossed it.. im going send back this lcd get a new one and hopefully it was just a DOA and not the phone itself.

3rdcoasttx said:
never heard of that before.. and unfortunately dont have the old lcd anymore.. i pulled it out a week ago before i got the new one and tossed it.. im going send back this lcd get a new one and hopefully it was just a DOA and not the phone itself.
Click to expand...
Click to collapse
Good Luck. I would assume if you asked on here you would expect to hear an answer you didnt expect or you'd have thought of it
But yes, there are 3 screen types from 3 diff makers. So if you bought a different one, you need to sync it or it will appear to be off. Digitizer will still work.
1) Green Flex (Sharp)
2) Green + Yellow Flex (Sony)
3) Yellow (AU)

try this one http://www.etradesupply.com/oem-htc-one-x-lcd-screen-and-digitizer-assembly-with-light-guide.html

Do instructions exist or are there any hints for the removal of the existing screen?

Videos on YouTube.
Tip: Keep track of where all the screws go. Have unlimited patience. Stay organized. Minimize distractions while working on it. Heed my screen sync post above.
Sent from my HTC One X using xda app-developers app

yeah, i followed the video instructions exactly. and youre right, i posted here to find solutions i never heard of or thought of. as far as syncing with old screen i am SOL on that one.. i sent it back today, and ill try out the new one. post my findings here and i am hoping its just a DOA screen and not the phone itself. thanks for the responses.

White noise
exad said:
Good Luck. I would assume if you asked on here you would expect to hear an answer you didnt expect or you'd have thought of it
But yes, there are 3 screen types from 3 diff makers. So if you bought a different one, you need to sync it or it will appear to be off. Digitizer will still work.
1) Green Flex (Sharp)
2) Green + Yellow Flex (Sony)
3) Yellow (AU)
Click to expand...
Click to collapse
We have synced the old LCD, installed the new and the screen looks like white noise on a TV screen.. We have tested this LCD in a functional unit and works fine.. Is this a board issue?

DevicesNow said:
We have synced the old LCD, installed the new and the screen looks like white noise on a TV screen.. We have tested this LCD in a functional unit and works fine.. Is this a board issue?
Click to expand...
Click to collapse
Sounds like it, but you may want to test another screen with that board just to be safe. I haven't tested extensively the results of mix and matching screens with different boards.

exad said:
Sounds like it, but you may want to test another screen with that board just to be safe. I haven't tested extensively the results of mix and matching screens with different boards.
Click to expand...
Click to collapse
We tested 2 functioning boards and both with same result(Work fine in good unit). I appreciate the fast response!

DevicesNow said:
We tested 2 functioning boards and both with same result(Work fine in good unit). I appreciate the fast response!
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Click to collapse
Then the GPU is most likely at fault which is built into the board. New board needed. As for the fast response. NP, I live here.
Sent from my One X using xda app-developers app

exad said:
Then the GPU is most likely at fault which is built into the board. New board needed. As for the fast response. NP, I live here.
Sent from my One X using xda app-developers app
Click to expand...
Click to collapse
Gotya, thanks.

[Q] HTC One X Digitizer/LCD Repair Problems

I run a cell phone repair company and we do quite a few repairs but this in particular HTC One X has us all stumped here. We do realize that there are 3 different versions of the dig/lcd and we have the correct part. But has anyone had problems with trying to replace the HTC One X dig/lcd assembly. It seems that after I put the new part on the lcd is black but the phone is still on. I even went back and put the old screen back on and it is still black. Prior to the repair the lcd worked fine. But just the digitizer was cracked. I have even went as far as changing the motherboard on the phone to a new one and am still having the same issue. Any help would be greatly appreciated!

Have you checked the ribbon length to make sure you do not have a break?
Sent from my HTC One X using xda premium

It would seem to me as though it's just as simple as one of the connectors is not plugged in or just not plugged in properly, which is easy to do since one of them is on the underside of the board which I believe is the one for the screen itself.

cellulardepot337 said:
I run a cell phone repair company and we do quite a few repairs but this in particular HTC One X has us all stumped here. We do realize that there are 3 different versions of the dig/lcd and we have the correct part. But has anyone had problems with trying to replace the HTC One X dig/lcd assembly. It seems that after I put the new part on the lcd is black but the phone is still on. I even went back and put the old screen back on and it is still black. Prior to the repair the lcd worked fine. But just the digitizer was cracked. I have even went as far as changing the motherboard on the phone to a new one and am still having the same issue. Any help would be greatly appreciated!
Click to expand...
Click to collapse
Hello did you sync the lcd's? Search how to get it sync'd! Thats why it doesn'n turn on...
Enviado desde mi Sony Tablet S usando Tapatalk 2

azteka88 said:
Hello did you sync the lcd's? Search how to get it sync'd! Thats why it doesn'n turn on...
Enviado desde mi Sony Tablet S usando Tapatalk 2
Click to expand...
Click to collapse
OP already stated that going back to the original LCD did not yield results.

exad said:
OP already stated that going back to the original LCD did not yield results.
Click to expand...
Click to collapse
ok look for this user, "skanman911" maybe he can give you some ideas, he switch the lcd for another NON sony and make it works...

exad said:
OP already stated that going back to the original LCD did not yield results.
Click to expand...
Click to collapse
Exactly. Seems like the only probable answer is that something was broken during teardown - either a cable or connector. Given the size of everything in there, it doesn't take much....

Did you ever find a solution to this?
I'm kind of in the same boat at the moment, BUT there's a silverish lining
In the midst of replacing a screen on my One X. Phone is obviously "on" (despite being in pieces on my desk), but n either the new or old screens will come on when I push the power button.
For a lark, I plugged the phone in, and did an 'adb reboot'
My splash screen comes up on the new screen just fine, as does the Viper Logo and my home screen and everything.... but once it shuts off the power button will NOT re-wake it up. At first I thought "I must have broken the power button" but I also forced a notification to it - which also typically wakes up the screen - and also saw nothing.
EDIT : Cancel that; for some reason the power button didn't work until I had the case back on. Grounding maybe? Either way, working fine now.

Some Ebay product page for a screen replacement said you should first power on the device with the old screen, then take the old screen out while the phone is running and put the new one in.
Maybe you should trie that. I'm not a hardware expert, so do some research before trying this and don't blame me if it doesnt work

That will only work if the screens not working. Op. It's difficult to narrow the issue in your situation. If the flex cables don't work, it's a short which would require much more advanced knowledge to fix.
Sent from my One X using xda app-developers app

[Q] Help screen not responding

Hey guys i hated my tf300 untill i put a custom ROM(hydro) on it.I have loved it ever since...unfortunately i dropped it and now the screen just doesnt respond anymore..screen still looks perfect no crack or scratch..i have tried full reset and everything i can....should i get i new digitizer??
will that fix it please help..

rchremi said:
Hey guys i hated my tf300 untill i put a custom ROM(hydro) on it.I have loved it ever since...unfortunately i dropped it and now the screen just doesnt respond anymore..screen still looks perfect no crack or scratch..i have tried full reset and everything i can....should i get i new digitizer??
will that fix it please help..
Click to expand...
Click to collapse
Cracks are not always visible. But if they're not there, I'd suggest you open the back case and try to reseat the ribbon cables at the touchscreen PCB. While at it, check the flat silver cable connecting that board to the mainboard also. Make sure nothing is jarred loose by the drop.

graphdarnell said:
Cracks are not always visible. But if they're not there, I'd suggest you open the back case and try to reseat the ribbon cables at the touchscreen PCB. While at it, check the flat silver cable connecting that board to the mainboard also. Make sure nothing is jarred loose by the drop.
Click to expand...
Click to collapse
thanx for responding...i did exactly what you said ..i disconnected both cables (silver and brown) and put them back..more than half of the screen started working, the other part was just dead and those parts didnt work even when i tilted the screen.. like 5 minutes later the entire screen is dead again......do you think its the digitizer?

rchremi said:
thanx for responding...i did exactly what you said ..i disconnected both cables (silver and brown) and put them back..more than half of the screen started working, the other part was just dead and those parts didnt work even when i tilted the screen.. like 5 minutes later the entire screen is dead again......do you think its the digitizer?
Click to expand...
Click to collapse
Sorry for the late reply. I've run into this problem before. When you have a digitizer that works for a few minutes then stops as the tab warms up, (1) more likely than not, there's a crack somewhere or a tear on the ribbons, visible or not, or (2) the new screen boycotting the old firmware. No new screen points to faulty hardware. However, it doesn't hurt to eliminate possible software causes.
The best test I can think of at this point would be to first check the physical connections again (check the connectors and ribbon ends under a magnifying glass, make sure they aren't damaged, bent or stripped), then re-flash the firmware following instructions in another thread, then turn on "show touches" in settings. If you still see "ghost touches" after a few minutes, the digitizer is likely ass-kicked by the drop.
I've had a digitizer on a TF act "leisurely" because of a crack across the width of the bordering black strip that couldn't be detected with the naked eye because it severed the circuit on just the underside. The surface was totally smooth. As the crack spread, it became obvious.
If I had access to your glass, I could've tested for you. Too bad.