Desire disassemble now Display won't work - Desire Q&A, Help & Troubleshooting

Hello,
I disassemble my Desire to replace the cover of it. The AMOLED display and the touch screen worked with no problems. I disassemble every part but had some problems by removing the touch screen so it was broken in one corner. I ignored it, replaced the cover, put all back together and attached connectors for display, keyboard and touchscreen. After that I start the phone but now I get only a black screen. I see nothing on the display but my phone starts because I feel the vibration and the lights of the buttons are glowing.
So, is there any option to fix that or is it now completly broken? I'm really sad because it worked with no problems a few hours ago and because of this cover replacement I have no video screen now.
On Ebay I can get a new AMOLED Display for 40$ (30-40€). Should I try this or is maybe the main PCB broken? The broken glass of the touch screen can not cause this problem, wouldn't it?
Greets,
Burak

Related

[Q] cracked AMOLED screen, how to check the digitizer?

Hi i have cracked screen in my NEW (!) desire .
There is only a small hairline crack visible in the glass underneath the outer cover of the phone (i assume it's the screen - as seen on the famous tj's tear-down photostory ). The outer glass is completely intact (how the F#$% did that happen?).
When the phone is on the screen is all green, yellow - like a leaked lcd.
So here goes my question: how do i check/know if the digitizer is fine? Or will i only know it after i replace the AMOLED screen?
No expert here, but as far as I know digitizer has to do with the touchscreen, so I guess that if your touchscreen works(font mean the display) the digitizer works too...
Sent from my HTC Desire
Heh,
that is exactly the problem that i don't know if it works. Phone boots normaly, but i can't see anything on the display so i can't see if the digitizer works the straight-forward way.
I think the only way to check that would be to connect the phone to the computer somehow and see some "telemetry" - i was hoping for a suggestion in this area
You can try to use adb logcat boot up your phone and try to push various buttons (blindly ) if logcat shows interactions, digitizer should be fine.
i tried to connect to logcat but it's impossible if the "usb debugging" feature is disable in the phone.
Nevertheless i replaced the display and the phone works perfectly now
(note to self: do not boulder with your desire in your pocket )
how to check that only glass has broken not digitizer? please answer me. i am going to buy phone which is working fine and has only cracked screen which is visible, looks like only glass broken handset, how to know if digitizer is damaged or not ?

Glass replacement, screen no longer working

Hi guys, cracked my note 2 glass last week and decided to replace JUST the glass myself. This included me warming up the screen with a hair dryer and replacing the glass. All went well, was VERY careful only to find out when I turn the phone on the screen is either blank OR white, and you can faintly see the boot logo. This alternates randomly when im prodding the motherboard. Does this mean there is a dodgy connection? Can I fix this, or have I completely melted the amoled when heating?
Forgot to add: Phone turns on fine, boot sound is there, capacative buttons light up. Even touch screen works (I can answer phone calls)
Thanks guys

[Q] Touch screen doesn't respond to touch

My S3 has been working fine for months sort of. I bought it off of ebay with a huge crack in the glass, then my brother dropped it and all the glass fell out. To use the phone we has to touch the bare LCD of the phone, which after a while we just but a screen cover over it. I waited 2 months, bought a new glass replacement and put it on, everything worked just fine. After a little the home button when pressed to the left a little would make the screen go crazy. it would start tapping and swiping in random places. After locking and waking the screen the phone was normal again. after that, i removed the glass again, and this time when putting it back on if i pushed the home button it pushed the glass down a little, which would turn my screen black. locking the phone and waking the screen again turned the screen back on. Also the screen was a lot less sensitive, i'd have to tap a key 2-5 times sometimes to hit a specific letter. whenever that happened i put 3 dsi's to weigh it down and push the screen down, which would improve the sensitivity. that worked twice, and now my screen doesn't respond to touch at all. the screen will wake, but only when i press on the bottom right corner of the screen will it respond to touch. Any word on what could be the problem? i need to know what to buy to replace in the phone. I've already taken the whole phone apart and plugged everything back in, after i had tried everything to get my phone to respond. Could this be a digitizer problem, or an LCD problem? any possible fixes without having to replace anything?
The first issue was using the device without the glass installed. By touching the bare LCD you most likely damaged it. Your best bet at this point is probably going to be to replace the Touch assembly ( Glass / LCD Touch digitizer ) . Also keep in mind, when doing any sort of Screen replacement. Be sure to keep everything as clean, and dust free as possible.

just installed new motherboard, still need to glue screen, but display no workie

the touch screen does though, annoyingly so, I can myself making a phone call trying to get the screen to display. The contacts at the ribbon for the display are all good and intact, both sides, I know cuz I've ruined them accidentally twice on two motherboards so I'm very careful now, board was tested good before I bought it on ebay, connector fully seated and locked... are there other points on the motherboard that effect just the display? Any you guys in here get this deep in this phone? This is the worst phone to dismantle. How to troubleshoot touch screen good, but no display?

No Display after dropping phone

Hi,
Unfortunately for me i dropped my phone and cracked my tempered glass in several places. gladly the screen underneath was perfectly fine after drop however, it has developed a fault as the screen won't turn on at all. I tried turning it off and restarting and although i can hear the boot up logo sound i see no picture at all. i can receive calls but cannot answer due to screen not displaying.
The screen had four main pressure cracks.... one is top left, one on the ear speaker, one bottom middle and one bottom left of phone. hopefully you can see it in picture.
Can you give advice on what to try or do to resolve this? will i need a new screen or disassemble to see what the issue is?
I've only had the phone for 2/3 months at most
Thanks in advance
looks like i will answer my own question....
i bought a replacement lcd & digitiser, one complete unit and swapped the necessary components over to new screen. all is working and good. not sure if the screen is repairable but there are other parts inside this screen worth selling on. it still has a non cracked immaculate screen along with the charging port and other stuff inside old screen.
at a cost of £70, i consider this an expensive fix
Thanks for the input kakawak
cheers

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