htc one lcd backlight isn't working - Sprint HTC One (M7)

a couple of days ago my phone got a little wet. so it was not turning on at all. just the back and home buttons were flashing. today after a couple of days not using the phone, i held the power button for 10 seconds and the screen lit up again. everything seemed to work. but as soon as the screen goes back to sleep it will not turn again unless you hold the power button to reset the phone. now i noticed that even though the screen seems to be off, it's actually on and the backlight for the LCD screen isn't on. i noticed it after looking at an angle and it seems to work just fine. you just can barely seen anything. is there a way to get this working without having to send it back to HTC?

Maybe there's still residual water in the phone? When I dropped my phone in the toilet about a year ago, I put my phone in a big bag of rice (only about $2-3) and that helped pull all the excess moisture out of my phone. Worth a shot anyway!

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my X1 got wet and non of the keys are responding, any hope?

After my X1 got showered the keys dont work anymore. First i was always greated by the boot screen, after that i told me if i want to reboot every time.
At the moment the power swtich is working fine again. But none of the other keys. I suppose on of them is pressd continuesly.
Will it revocer? Can i do anything to help it?
You shouldn't have turned it on. Leave the phone a few days to dry out completely.
never power-on a wet phone dude... place the phone in a bag of rice for about 3 days, then blowdry it or rest it on a warm surface like a tv set...
everything should be back to normal
note: uncooked rice
Well i was on while it got wet..and i only noticed it because i felt it vibrate as it rebooted.
If something didn't burnt out, go to a service and for a little fee have it cleaned...
I dismantled it today to see if i could clean the electronics of the keys, but i didnt get there. The actual keypad seems to be taped together..i didnt want to rip that open in fear i wont get it together again.

Need help! Screen won't turn on!

So yesterday my toddler son was playing with my Sprint Diamond when I saw him drop it onto the carpeted ground. The phone probably fell maybe about a foot but I guess the angle it hit the ground caused the battery cover to pop off.
When I picked up the phone, I noticed the screen was off and assumed it was in sleep mode because the battery didn't dislodge or anything. But when I pressed the power button, the phone wouldn't come on. I tried pulling the battery, hard resetting, etc but the screen still won't turn on.
While I was playing around with it, holding down the volume down button, power button and enter button at the same time, I could see the screen come on for a bit, then go blank again.
Physically there's no visible damage, there isn't even a scuff or scratch on the corners where the phone probably hit the ground. However, by some freak chance I think the fall caused something to go wrong internally, maybe the LCD digitizer became loose?
When I pull the battery and restart the phone, it vibrates as if it were powering up. But the screen never comes on.
Considering I don't have insurance on the phone, taking it back to Sprint is not an option and I'm out of the warranty period. Has this happened to anyone before? Any advice? Anyone have experience disassembling a Diamond? How hard was it? Thanks in advance.
the diamond (sprint) is a layered device.
you will need some very small screwdrivers lots of light and patience.
the screen is glued to the digitizer and the front housing, removal from the housing WILL crack it.
the boards and lower button pad con be removed safely, for inspection/reseating of plugs.
if the problem is not a loose plug,than a new screen and digitizer is in order and available on ebay from china

Power button failure

First off, I know there are multiple threads not only here on xda but elsewhere on the internet that describe other cases of Nexus One power button failures. I believe mine is different.
I suspect this has something to do with it being submerged in a cup of beer for a half a second a couple weeks back (never letting that person touch my phone again btw). It's very intermittent and has gotten progressively worse, to the point where I think it'll eventually die and at that point I'll need to turn the phone on some other way. I think somehow it is a "short" electrically inside the device. It can sit on my desk and randomly turn on and off by itself, as well as make the reboot/power off menu pop up, as if I'm holding down the power button. This makes using the phone extremely irritating, especially now, as the problem worsens. I can't do much in Recovery, at least CWM, because the power button either turns off the screen or goes to the previous menu. And while typing, the phone screen will either turn off, or the reboot menu will pop up, and I'll accidentally tap something else. Frustrating. My question is basically...is there a way to disable the power button without opening the device? I'm guessing probably not, but it's worth a shot...I purchased the phone in 04/2010, from a third party, and it's no longer under warranty. I was planning on waiting to get the Galaxy Nexus, and if not, the Samsung Galaxy S 4G. I've been dreading the day I need to retire my beloved Nexus One....and it looks like it's going to be sooner than I wanted.
Thanks for any replies.
Normally I would say there is probably still a little bit of water in the power button housing but since it was a few weeks back I doubt it. But I guess you could always try the bag of rice trick. If then I don't know and you may have to open it up :/
I had the same problem for about 5 months and it has sense sorted its self out without me doing anything. Now the power button functions 100% (knock on wood).
I had placed it top down in my cup holder while driving for 3 hours and had not noticed a bit of condensation from that mornings water glass. I got home, grabbed my phone, and noticed a wet spot on my pocket and my phone had water on the top. It was in the Case-mate case in my sig and I let it dry over night and it worked the next day after blow drying the inside. But a week later the power button was clicking on and off. That was the longest period of use my G1 has seen sense I bought my N1.
Some days it would go on for an hour+ and would wreck the battery life. I tried everything and was unable to find a way to disable the power button presses.
I did not open the phone even though it was a month out of warranty. My assumption is there was still some sort of moisture inside that was causing a short. Because you never had a warranty in the first place, I would say your best bet is to take it apart and let it sit in rice for at least a couple days.

[Q] Weird water damage

Hello,
I used my z1 in water and it turned off after a while. Then, a day after, it suddenly turned itself on, and worked for about a day. During that period, there were an issue about battery level, and so on, it showed wrong level, but it worked. Also, i could notice some drops of water under the screen. Afterwards, it turned off, and I couldn't make it work ever since.
But... When I press vol up and power btn it vibrates 3 times. When I hold pow it vibrates once (turns on) and after couple of seconds it obvioulsy starts working, I get audio notices about new mail, SMS and so on. The second I receive mail on computer phone makes a sound as well, so it is actualy on. But... Screen is not working at all...
What can I do?
Thanks
You can try drying your phone through rice and forget about it for a couple days, however I recommend you send your phone in since the screen is already not working. If you want though, to reduce cost, you can replace the parts yourself, but it's very hard to find the parts, diagnosing what's working and not, and performing the assembly / disassembly process.
there are videos how to take z1 into parts, but it is not easy, seriously. i would also try opening ports and put phone into rice for some days.
Just one question, have you tried contacting Sony? The device is IP certified, should be covered under waranty.

I think I broke my phone :/

TLDR: I was cuddling my gf to sleep while using my phone. I fell asleep too. The phone was in bed with us for a couple of hours, but I don't think either of us lay on it, though my gf may have put some weight on it while getting up from bed to go to the w/c.
This morning it was unresponsive to touch, after rebooting it twice it won't turn on at all
When I press on the screen 1/3 of the way down with a bit of force, I feel it moving a bit and I can hear and feel a click on the inside.
The glass is intact.
-----------
I fell asleep with the phone in my hand and I must have let go of it in my sleep. I woke up when my girlfriend was going to the bathroom in the middle of the night. The phone was still in the bed near where my hand was when I was falling asleep, but it was also in the path of my half asleep girlfriend rolling out of bed. I checked to see if it was still alive by pressing the power button and the screen turned on. Satisfied, I put it on my nightstand and went back to sleep.
When I woke up this morning I tried using it. It wasn't responding to touch at all, not even the home row buttons. But the volume rocker worked and so did the power button menu, but I couldn't select reboot in the menu with the touch not working. I force closed it with power + volume up, and when it rebooted it still wouldn't respond to touch. I force closed it again and now it won't turn on at all. I tried numerous button combinations (power on + volume up, down, all three, holding for up to 20 seconds) and it doesn't respond to being plugged into the wall or to the computer either, no led light and it's not mounting on the PC. It had about 60% power left before force closing it.
The funny thing is is that I couldn't figure out what the cause was for a long time. I googled it and search results for Z1's "sudden death issue" appeared and I figured it was something like that. Or maybe it was a delayed effect of putting it underwater 2 days ago.
But then it dawned on me, it was (of course) what had happened in the middle of the night. The phone looks completely fine, but after examining it closer, when I press on the screen 1/3 of the way down with a bit of force, I feel it moving a bit and I can hear and feel a click on the inside. I wonder what that could be..
What are my options now? I got the phone just a couple of days ago. I doubt this is covered by warrenty right? User error?
I'm not sure if this is even the real cause though - I didn't see it happen.... but I guess it's the most logical explination.
My girlfriend is pretty small so I'd imagine she would have had to put all her weight on her hand or elbow when she was getting up to be able to break the phone like that. I have a foam mattress which probably absorbed a lot of the weight? If this is indeed the case, I'm a little disappointed in the build quality if this broke something in the phone's innards with relative ease.
Any advice would be appreciated. It's the UK model bought outside of the UK from a local retailer. This is my first good smartphone and I loved it for the short time we had together. I'm devistated about it and not really sure what to do next.
Someone hold me
No visible damage = return it as faulty
Just say it died overnight while charging.
Sent from my D5803 using XDA Free mobile app
pricey2009 said:
No visible damage = return it as faulty
Just say it died overnight while charging.
Sent from my D5803 using XDA Free mobile app
Click to expand...
Click to collapse
Thanks, that's the plan I just emailed the seller
Edit: They said to go to a Sony store to claim warrenty on it
adamk7 said:
Thanks, that's the plan I just emailed the seller
Edit: They said to go to a Sony store to claim warrenty on it
Click to expand...
Click to collapse
You should have a 14 day guarantee with the seller if you bought from UK..
I would go back to them and demand a replacement..
Sent from my D5803 using XDA Free mobile app
So I was just about to go to the sony store, I had the phone, cables and everything neatly packed up an ready to go. I decided to give it one last try just in case to avoid the all too common scenerio when it unexplicably magically starts working in the store. I plugged it into a wall charger and held down the power button and the red light turned on! I left it for a minute and then pressed the power button again, and the screen turned on with a battery charging logo! It looked like the battery was fully dead so I left it for 5 minutes and turned it on again. It booted up! Now the moment of truth: will the touch screen work....
Drum roll......
It does!
Everything works normally now. I have no idea wtf happened but I'm really happy that I don't have to deal with sending it in and everything.
Though I'm a little worried about what the screen clicking is, that's still there.
I'll post a video later and might take it in to sony anyway to see what they say
Edit: I made a new thread with the video: http://forum.xda-developers.com/z3-compact/help/video-pressing-screen-spot-makes-t2918289
adamk7 said:
So I was just about to go to the sony store, I had the phone, cables and everything neatly packed up an ready to go. I decided to give it one last try just in case to avoid the all too common scenerio when it unexplicably magically starts working in the store. I plugged it into a wall charger and held down the power button and the red light turned on! I left it for a minute and then pressed the power button again, and the screen turned on with a battery charging logo! It looked like the battery was fully dead so I left it for 5 minutes and turned it on again. It booted up! Now the moment of truth: will the touch screen work....
Drum roll......
It does!
Everything works normally now. I have no idea wtf happened but I'm really happy that I don't have to deal with sending it in and everything.
Though I'm a little worried about what the screen clicking is, that's still there.
I'll post a video later and might take it in to sony anyway to see what they say
Click to expand...
Click to collapse
Glad to hear it
I have the same phone symptoms as OP. Except, I was using the phone just 15 minutes before it refused to turn on. Also, for the first time I noticed the glass making a clicking sound when pressing coming from the middle of the screen, inline with the power button. I`ve tested the phone before and never heard this clicking sound.
At this point, even if the phone fixes itself, I`d rather send it in for repair before the clicking turns into a screen fracture.

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