[Q] Constant black screen from boot, but still responsive - HD2 Android Q&A, Help & Troubleshooting and Genera

My ROM is NexusHD2-ICS-4.0.3-CM9 V1.1
The last thing I did was watch a video on YouTube (Application). I then got a black screen the next time I tried to unlock it, this has happened a few times with this ROM so I normally just soft reset it by taking out the battery.
However this time I did it again and my phone turned on, but was constantly black. It vibrated as if it was turning on but did not do any boot logo. Tried booting it into the tri-color screen and nothing still.
I have realised though that it is still booting up, and working like normally, but the screen is just black, it is a lighter black as if it's responding if I press a button. I managed to unlock my phone by doing my pattern, and I can hold the home button and feel a vibration, so I know it has booted into Android.
I'm just really not sure what to do, I've looked all over the forums and found one similar problem but no solution. I think I can get into the tri-color screen if I hold down vol down but it won't show the screen, I just know it is in the screen as I see the light is constantly a light black as if it is constantly on.
Shall I try Task29 or does anyone have any idea what I should do?
Edit*
I can now run AndroidScreenCast and operate my phone from my PC. I can control my phone as if i was normally, but the screen is just black. Like I said it turns onto a light black when anything happens but hat's it. Is it just my screen afterall? (It has been cracked for over a year now but no problems upto now..)

My guess is that you accidently disconnected the output cable from phone to display.
This should be the issue since there seems to be no screen but interactive elements.
Sent from my HTC HD2 using xda premium

Any idea if I can do anything about that myself?

Korv said:
Any idea if I can do anything about that myself?
Click to expand...
Click to collapse
Hmm the cable is right under the hardware buttons.
You can try pressing around them to have a chance of getting it back (no guarantee and if you break your display its not my fault).
If you are experienced enough you could remove the LCD but I don't know anything about that.
Sent from my HTC HD2 using xda premium

yes, you could be the ribbon cable connector to the motherboard, you must fully remove the display and see if the latch on the cable connector is closed.
Also check if the cable is securely attached to verify you see two small ends' near the copper plug is attached to the plastic connector on the motherboard.
good luck
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Related

rebooting/freezeing problem

i have a tmobile wing. it randomly freezes while using it, fades to white then off, turns off
sometimes only way for it to come back on i have to take out battery and put it back.
when i turn it on sometimes itll loop the tmobile thing, maybe make it to the windows mobile green page then turn off and try again.
ive reinstalled the tmobile rom, installed open touch, still the same thing.
i read about the memory card having a loop porblem so i took it out, still. tried installing total commander and renaming the file but it wont let me rename it.
thought the screen ribbon or another wasnt in good so i took it part and made sure i put everything in good.
maybe the fact that a pin that touches the battery it broken? see how they make an arc or so. and the 1 is broken. is that the problem maybe?
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xeek said:
i have a tmobile wing. it randomly freezes while using it, fades to white then off, turns off
sometimes only way for it to come back on i have to take out battery and put it back.
when i turn it on sometimes itll loop the tmobile thing, maybe make it to the windows mobile green page then turn off and try again.
ive reinstalled the tmobile rom, installed open touch, still the same thing.
i read about the memory card having a loop porblem so i took it out, still. tried installing total commander and renaming the file but it wont let me rename it.
thought the screen ribbon or another wasnt in good so i took it part and made sure i put everything in good.
maybe the fact that a pin that touches the battery it broken? see how they make an arc or so. and the 1 is broken. is that the problem maybe?
Click to expand...
Click to collapse
That may well be the case. The first thing to try is to plug the phone to the charger and see if the phone works properly. If it does the next thing would be to get a new battery.
I had the same problem and it was solved by installing a new battery.
Best of Luck
yes it does do it while plugged into charger. a little less though.
and ive noticed that when i try to fix the back cover, doesnt fit right so it pops off on 1 corner, i take it off and put it back on tight, from me pressing down the phone likes to freeze and reboot.
ive been thinking about a new battery. i guess ill go ahead and get one then.

something weird happened to my HD?

This happened some days ago i should have taken some screenshot
Hd frooze i reset it on the power button
Upon turning it on i get a error message about some boot-picture not found
then i get a screen that look like this
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Except it was only like 3 colors bars ,one was white and i think it was purple and yellow
I touched the screen but nothing happened except i got the word "serial" on the unit
conected to Pc the "serial" word changed to "Usb" nothing happened
I though it was bricked but then i took out the battery and put it in
and it booted fine
What realy happened?
did i just got the equivalent of a Windows Crash? or Wb bluescreen? (not realy a bluescreen but you get the point)
it havent happen again and taking out/in the battery solved it
However looking at those Colors was amazing they was much brighter than the screen so is like brightness went to top it realy shined up my room
but it was a bit scary
Coolvibes said:
This happened some days ago i should have taken some screenshot
Hd frooze i reset it on the power button
Upon turning it on i get a error message about some boot-picture not found
then i get a screen that look like this
Except it was only like 3 colors bars ,one was white and i think it was purple and yellow
I touched the screen but nothing happened except i got the word "serial" on the unit
conected to Pc the "serial" word changed to "Usb" nothing happened
I though it was bricked but then i took out the battery and put it in
and it booted fine
What realy happened?
did i just got the equivalent of a Windows Crash? or Wb bluescreen? (not realy a bluescreen but you get the point)
it havent happen again and taking out/in the battery solved it
However looking at those Colors was amazing they was much brighter than the screen so is like brightness went to top it realy shined up my room
but it was a bit scary
Click to expand...
Click to collapse
You just accidentally entered the bootloader. From there you can flash different roms and / or hard - reset, check info etc...it is a known....thing.
Oh ok good to know
how do i exit it without taking out the battery if it happen again?
Coolvibes said:
Oh ok good to know
how do i exit it without taking out the battery if it happen again?
Click to expand...
Click to collapse
Just soft reset

[Guide]For people with white screen

If your xperia play (Doesn't matter which model, it affects all plays) is getting this white screen here:
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The problem that you are facing is a busted flex cable. I'm posting this thread because I have seen in the past week at least 5 people ask what the white screen is, and how to fix it. Here is a video on how to take apart your play: http://www.youtube.com/watch?v=-3n5ZfkqhzE and here is a link to where you can buy a new flex cable: http://www.ebay.com/itm/Flex-Cable-Ribbon-Connector-for-SONY-ERICSSON-XPERIA-PLAY-Z1-Z1i-R800-/180869752159?pt=LH_DefaultDomain_0&hash=item2a1cad655f#ht_1547wt_1185
The only way you can avoid the flex cable damage is to keep from sliding your gamepad in and out all the time. So basically, just try to do it if you are actually going to be playing a game, not just something you do because you are bored.
I hope this helps anyone with that problem!
Thanks. Does this mean sliding up slowly as well yeah ?
sufy1000 said:
Thanks. Does this mean sliding up slowly as well yeah ?
Click to expand...
Click to collapse
Not necessarily. Just don't do it too often. Mines lasted me since june 2011 so far.
Sent from my R800x using XDA
sufy1000 said:
Thanks. Does this mean sliding up slowly as well yeah ?
Click to expand...
Click to collapse
Basically It's every time it slides. Just don't sit there rapidly opening and closing it.
Sent from my R800x using XDA
I have that problem. It still works perfectly when I open the gamepad, so I don't care.
VictoryStar said:
I have that problem. It still works perfectly when I open the gamepad, so I don't care.
Click to expand...
Click to collapse
I'd order a new one soon, because eventually it breaks with it open too.
i have a different problem
first my screen would come on but the phone was on and working etc
but the screen stayed black
if i kept pressing power on button or the hardware keys it would come back on sometimes
or if i restarted the phone
but now the screen wont come on at all, i power the fone on and it vibrates
and then it vibrates again and power buttons goes blue for a short time i think to signal that doom kernel has loaded and that u can go to recovery
but that it.
phone is dead
Wow, this is a huge problem. Is this happening to a lot of launch-buyers?
I don't know what your problem is...It might be your LCD
Ah, I have this, but its only partially down the left side of the screen, about 20px
Sent from my Xperia Play using Tapatalk 2
Thank you for the video, I just push the conection and works.
Sorry for my English
Sony repaired my flex cable for free, although i unlocked my bootloader with a key from their website. So if you still have warranty on your device you don't have to fix it your self and lose your warranty completely.

[Q] Another dead nook

I am afraid to say my nook froze today with a strange screen:
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The light part of the screen seems to be sl;owly fading.
The nook is unresposive to all the keys, including shutting down. It was running normally and not being used at the time when it froze.
When connected to usb the contents of the drives are displayed. I have tried to reboot with nootmanager, but nothing seems to happen.
Any suggestions for next steps?
Step 1: Connect USB and see that the two UMS drives are visible on your desktop.
Hold down the power button for 20 seconds.
Do the drives disappear?
Try pressing the power button again.
Do the drives eventually reappear?
If so, then it would appear that your Nook is working fine, just no screen.
Renate NST said:
Step 1: Connect USB and see that the two UMS drives are visible on your desktop.
Hold down the power button for 20 seconds.
Do the drives disappear?
Try pressing the power button again.
Do the drives eventually reappear?
If so, then it would appear that your Nook is working fine, just no screen.
Click to expand...
Click to collapse
By that test it's the screen. Any chance it could be the connection to the screen? I haven't taken it apart yet.
Yes, it looks like the screen.
I guess this is no longer in warranty?
There's a 1% chance that it is the display connector.
That's a pretty solid little connector though.
Replacement screens sell for about the same price as the Nook.
Also, it's not guaranteed that it's specifically the screen.
It could be the power management or interface for the screen on the main board.
If you have another Nook you can swap stuff to narrow things down.
Renate NST said:
Yes, it looks like the screen.
I guess this is no longer in warranty?
There's a 1% chance that it is the display connector.
That's a pretty solid little connector though.
Replacement screens sell for about the same price as the Nook.
Also, it's not guaranteed that it's specifically the screen.
It could be the power management or interface for the screen on the main board.
If you have another Nook you can swap stuff to narrow things down.
Click to expand...
Click to collapse
If I get a used nook is there amy problem if I put my tweaked nookManager backup image from my old nook on it?
If you copy over a full 1.9 GB image to another Nook it will be the same and take over the identity of the old Nook.

[HELP] OnePlus 5 - weird LCD problem

Greetings dear people of this forum!
Few days ago my phone's display started behaving in a very weird way (could be a minor drop down).
When I press the power button to draw the pattern, the whole screen is full of disturbed horizontal lines (pic_1).
If I apply some pressure on the screen's bottom right corner (pic_1 - red dot) it gets back to normal and doesn't even flickering at all (pic_2).
Howerver as soon as the display goes off because of the turn off time, too close to the face when making a call or just switch it off with the power botton, the problem reaccures.
I am very sure it is hardware related, because on the screenshots there is nothing like that and it is persist in the boot sequence. In my opinion this is some kind of faulty connection, I have already take the phone apart to catch any loose connector, but nothing changed after that.
I feel like I have to buy a new screen, but I hope I can repair it somehow, because it can works very well after my acupuncture therapy.
I have bought the phone second-hand, and I know there was a screen replacement, so its not the original one.
pic_1:
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pic_2:
Do you guys have any suggestion?
Thank You in advance!
Grabps said:
Greetings dear people of this forum!
Few days ago my phone's display started behaving in a very weird way (could be a minor drop down).
When I press the power button to draw the pattern, the whole screen is full of disturbed horizontal lines (pic_1).
If I apply some pressure on the screen's bottom right corner (pic_1 - red dot) it gets back to normal and doesn't even flickering at all (pic_2).
Howerver as soon as the display goes off because of the turn off time, too close to the face when making a call or just switch it off with the power botton, the problem reaccures.
I am very sure it is hardware related, because on the screenshots there is nothing like that and it is persist in the boot sequence. In my opinion this is some kind of faulty connection, I have already take the phone apart to catch any loose connector, but nothing changed after that.
I feel like I have to buy a new screen, but I hope I can repair it somehow, because it can works very well after my acupuncture therapy.
I have bought the phone second-hand, and I know there was a screen replacement, so its not the original one.
pic_1:
pic_2:
Do you guys have any suggestion?
Thank You in advance!
Click to expand...
Click to collapse
Could also be any gaps or something that can cause the lines(display gets pressure from wrong installation).
2 options basically. Loose connector or faulty LCD.
I don't think it's software related.
If you can give it back, then you should. If not, then you can either try to fix it by yourself by replacing the LCD assembly (with the touch digitiser).
daviddosa said:
2 options basically. Loose connector or faulty LCD.
I don't think it's software related.
If you can give it back, then you should. If not, then you can either try to fix it by yourself by replacing the LCD assembly (with the touch digitiser).
Click to expand...
Click to collapse
Yes, You were right, as I thought too. The reason behind the problem was the LCD.
I have replaced it and now it works like a charm.
Thanks the response!

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