[Q] Display is broken or cable plugged out? - G2 and Desire Z Q&A, Help & Troubleshooting

Hey Guys,
today my HTC Desire Z fell on the ground with the Display at first.
Now the screen doesn't work right anymore. Touch and everything else is fine, but it shows everything with a strong shade of red. I'd like to take a picture but everything looks fine on a photo
So my question is: is it possible that this is caused by an unplugged cable and how can i fix it or is the display really broken?
Thanks!

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Strange HTC 8525 Problem

Hi I'm new to this whole PDA phone thing but I got a HTC 8525 and got it unlocked it worked fine for a while then one day I was trying to run the pocketGBA emulator when my screen went blank(all the colour faded away then the entire screen just went blank). I took it to get repaired and the software end of things are fine and the hardware end is working fine but for some odd reason the screen just lights up and is completly blank. Even stranger is that sometimes the screen is totally fine and has no problems. Can anybody help me with this weird problem??? Note the screen is not broken.
Hi!
Probably You have a bad flex cable and it's required to be changed. Sometimes it happens so of to much qwerty keyboard opening and closing.
hi,
I resolved same problem than yours with this tuto
http://forum.xda-developers.com/showthread.php?t=321163
good luck

[Q] HTC Desire G7 - unusable

I recently changed the LCD screen on my HTC Desire G7 (A1818) as it was dropped. Apart from a white line on the screen the handset appeared to work fine. Now the phone won't recognise the charger (please connect charger!) and the touchscreen doesn't work. When using the USB cable HTC Sync recognises the phone and appears to communicate with it. On hard reset I get the error Touch screen: fail.
I have changed the touch screen but it hasn't made any difference.
I have a few questions:
- If the LCD screen is faulty can that stop the touchscreen from working?
- It looks like it could be the LCD board; is there anything anybody suggest to check this board?
- Could this be a software fault?
- Could the two fault be related?
Please help as it is driving me mad and costing me loads .

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!

[Q] Help! Phone boots and is recognized by computer but no image

Hello there
Im hoping that someone here can help me since im ready to seel the pho for spare parts... i've tried it all.
Heres the deal:
- The phone boots well and if i connect it through usb to the computer i can even access the folders and all.
- I can take photos (i her the sound of the shutter and all and see the piics taken in the folder when connected to the computer) and screnshots
- I managed to restore the phone back to original settings and even update software with sony official soft.
- Inicialy i bought the phone as faulty to try and fix it since the buyer informed me there was no water damage ( and i can confirm this because the "stickers" only show white). He informed that the phone just stoped showing image on screen.
- I thought it was a problem with the LCd so i bought a new one and replace it. The problem persists. Everything works but the screen.
Any toughts on this one? Could the motherboard be faulty in only one place (image, proximity sensor, etc)?
Thanks for you time
Regards
Try the service manuals...
edinacio said:
Hello there
Click to expand...
Click to collapse
I have fully same faulty 2nd "spare parts" phone.
All works except screen, all as you described.
I checked, in my case problem definitely in screen because if connect main board to really working LCD panel = screen ok.
And vice versa: if connect normal main board to this probably faulty screen = black screen.
Maybe here broken flexible connector.
Also nothing interesting related to this case in service documents.

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...

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