[Desire HD Q&A, Help & Troubleshooting] unbeteiligter:
Hello Forum,

seems that my DHD has an irreparable error.

But i've still a little hope that maybe someone of you guys out there can point me into the right direction to repair the phone again. :confused:

What happened:

on December, 20. for no apparent reason the Display started flickering approximately 2 cm from the top.

The upper Part (the first 2 cm from the top of Display) was showing the normal Picture, on the lower Part the Picture was flickering at irregular time intervals, but the touch gestures were still working without any Problems.

Setup at that Time:

- Latest 4ext Touch Recovery

- Latest MIUI.us Rom by bliind

- Custom DPI set to '190' (with ROM Toolbox)

- Max CPU Speed set to 1200 Mhz (with Set CPU)

(Had this setup working fine without any issues for approx. last 2 Months...)

Last change i did before the error occured: Set Custom Boot Animation with Rom Toolbox

The Flickering started not immediatly after setting the new boot Animation but i think 2 days and some reboots later...

Actions that i've already tried to solve the Problem:

1. Shut down the Phone, pull out the Battery, wait some Minutes, reboot the phone.

-> The flickering was gone and the Display looked normal after reboot.

2. After some time I took the Phone out of my pocket and the flickering was there again like before.

Tried to set DPI back to original value '240'

reboot the Phone

-> The Flickering still was there and it seemed to me that the responsiveness of the touch was slightly slower than normal.

3. Reboot into Recovery

Nandroid Backup all Partitions to SD-Card

wipe all partitions except SD-Card

new, totally clean flash of latest MIUI.us Rom by bliind

Reboot the phone

-> The flickering was gone; responsiveness of the screen normal as it was always before.

4. restore all apps; put the phone on the charger over night. everything worked fine again.

on the next Morning this strange flickering was there again; the Touchscreen was very slow responsive in the flickering area

Managed once more to reboot into recovery, but the flickering was now even in the Recovery and on the boot screen.

-> The Touch got more and more unresponsive.

Could no more start a new ROM flash out of Recovery.

5. Tried to access the phone via aahk tool and restored last stock ROM

-> After Reboot the DHD vibrates (like it usually does for startup)

the screen shows a bunch of black and white Stripes that chnge their Color when the Boot Animation should show up,

and later again when the lockscreen should appear.

It makes the boot jingle and i can send Commands via adb.

but Touch commands doesnt work, (tried to put in the Pin blind, but it shows no reaction)

Stupid, but I can't change it: my Warranty and the extra Insurance that i purchased for the DHD ended just 2 weeks before on 6. December. :rolleyes:

6. Disassembled the whole phone with Help of you tube disassembling Guide, carefully cleaned all contacts and assembled it again.

-> nothing changed; same behavior like before disassembling.

What can I do? Any ideas except of small rasping and stirring into the soup? :confused::eek::crying:

Can it be only the display? Maybe the Graphic Chip?

Any other ideas?

thank you for reading this all and i appreciate any suggestion that might give my DHD a new spirit of life

Greetings from Cologne