US Cellular-G4-Replaced screen, turns on but black screen. - G4 Q&A, Help & Troubleshooting

I replaced my screen and digitizer(without frame). Everything went smooth and seamlessly but when I turn the phone on, the LED lights like normal, it vibrates like normal, but there is nothing on the screen (acts like the screen isn't even installed?) After the phone boots I can hit the volume buttons and it interacts with my actions (sound and vibration). I got the assembly thru Fixez.com. just looking for general knowledge, answers or any other circumstances like that. Thank you!

Maybe cable not completely inserted into connector? Take it apart again, use a pencil eraser to lightly clean the cable contacts and reinsert. If you can, try to power the phone while its apart to see if it lights up. If still doesn't work, I'd contact the seller about a possible replacement.

I have tried the eraser idea yet but I taken it apart a couple time to double check the connections and everything. Can't have it replaced or sent back either. Already looked into that. I know im out the money for that screen if it never works but im just trying to understand why it wouldn't work.

Got the phone working and I'm using it right now. Ended up getting a screen and frame assembly. So now the only issue I'm finding is that it doesn't like to turn on when the room is dark. I checked the sensors and they are all working except the proximity sensor says "Near" all the time.
Sent from my LGUS991 using XDA-Developers mobile app

Related

XDA Orbit Screen Problem

Hi Guys.
I've had my orbit for about 3 weeks now, and its been perfect. I had a spare 512mb microSD card lying about so I used that, but my 2Gb microSD card came in the post yesterday.
I put the card into the phone, and then plugged the phone into my computer via USB. The screen turned off, and no matter what I did, it wouldn't come back on.
I reset it using the small button on the side (sticking my stylex pen into it) and it restarted itself, showing the splash screen no problem, but as soon as you would expect the Today screen to show, the screen goes off. It get's weirder, because if I hold down the camera button to turn that on, the screen switches itself on, and you can use the camera no problem. If i hit the windows key, the menu appears, but if I try clicking an icon, the screen goes dead again.
Also, sometimes (not always, don't ask why) if I leave it for a couple of minutes, the screen slowly appears, as if the backlight is very very dim. But the second i tap anywhere, or touch a button, it goes off again.
I can still answer calls, and my alarms still go off. The phone seems to work perfectly, but just not the screen. I think that it might be the backlight having been turned so far down its off, but I don't know how I would go about reseting that.
Sorry for the long story, but any help would be greatly appreciated.
Cheers
have you tried to make a hard reset?
Man I had the exact sane issue. Its to do with the backlight. I had to angle the screen to try and see anything on it, then changed the backlight to full and made sure it didnt switch off after certain time, everything fine since then. dont know how it happened.
exactly like fubofo wrote,try to unplug,screen should be visible again, check backlight prop.-and plug it in.
i have the same problem this appears sometimes.I think this is a damn bug that appears randomized.It happend to me like 6 times.I have the o2 xda orbit with german o2 rom.What's about yours? it dims the light under the normal makeable settings this sucks.And the camera works because the light settings goes automaticly to the highest settings in camera mode.
Hi guys,
I remember having that problem but it was when I tried some programs, including HTC X-button and another called Invisible Shooter. I haven't got any further incident after uninstalling them.
Do you think what you've encountered with may also link to some program you've installed?
BUSPBP
Totally confirmed! Had same issue after replacing a touch screen. Thanks, guys, for a clue!

[Q] Screen wont turn on after it turns off. ATT Tilt 2

Everytime I boot my phone up, it works fine up until when the screen goes into sleep mode. Once it goes into sleep mode I cannot turn the screen back on, it stays black. The keyboard, end and answer key lights show up when I press the power button but the screen just stays black no matter what button I press.
I end up having to either take the battery out or using the stick to press the reset button on the side in order to get the phone to where I can see the screen again. I have adjusted the settings to where the screen doesnt go into sleep mode and the screen just stays on but that drains my battery. I want to be able to have my screen go off so I can save power but if it goes off it wont come on again until I reboot.
I have done a hard reset. This problem started happening to me when I started using the Energy Rom but I've even flashed different Roms and the problem still exist.
Somebody please tell me what's wrong! I need help! This is a big annoying problem to have. Thanks.
is this problem occurring when you slide the keyboard out?
i had the t-mobile touch pro2 with this problem.
the screen would die when the keyboard was out and not come back.
if this is the case, what i did was...
well. obviously not open the keyboard fully.
but if i accidentally had.
instead of pulling out the battery, i waited...
till the screen 'naturally' went to sleep.
than i would pull out the stylus or press power button
and the screen would come on.
sh4d0w86.
sh4d0w86 said:
is this problem occurring when you slide the keyboard out?
i had the t-mobile touch pro2 with this problem.
the screen would die when the keyboard was out and not come back.
if this is the case, what i did was...
well. obviously not open the keyboard fully.
but if i accidentally had.
instead of pulling out the battery, i waited...
till the screen 'naturally' went to sleep.
than i would pull out the stylus or press power button
and the screen would come on.
sh4d0w86.
Click to expand...
Click to collapse
Yes the problem still exist even when I slide the keyboard out. Once the screen goes off, that's it....pressing the power button to get it out of sleep mode, sliding the keyboard, I press all buttons and nothing works. The only thing that "works" to get the screen back on is removing the battery or using the stylus to press the reset button.
When sliding the keyboard out the keys light up but the screen doesn't come on, also pressing the power button lights up the end and answer keys without the screen coming on.
themasterhook2000 said:
Yes the problem still exist even when I slide the keyboard out. Once the screen goes off, that's it....pressing the power button to get it out of sleep mode, sliding the keyboard, I press all buttons and nothing works. The only thing that "works" to get the screen back on is removing the battery or using the stylus to press the reset button.
When sliding the keyboard out the keys light up but the screen doesn't come on, also pressing the power button lights up the end and answer keys without the screen coming on.
Click to expand...
Click to collapse
so. whenever the screen goes out, period, you cant get it back?
or the screen goes out and cant get it back once you slide the keyboard out?
if it is only when sliding out the keyboard...
try not opening the keyboard fully on the right side.
on my rhodium, after that point, the screen goes out.
sh4d0w86.
sh4d0w86 said:
so. whenever the screen goes out, period, you cant get it back?
or the screen goes out and cant get it back once you slide the keyboard out?
if it is only when sliding out the keyboard...
try not opening the keyboard fully on the right side.
on my rhodium, after that point, the screen goes out.
sh4d0w86.
Click to expand...
Click to collapse
Yes, period. Also, you know when you put your face to the phone during a call and the screen goes off so your face wont press anything on the screen? It doesn't come back on from that either once I end the phone call, it just stays black. I'm assuming you don't have any other suggestions. This Sucks
themasterhook2000 said:
Yes, period. Also, you know when you put your face to the phone during a call and the screen goes off so your face wont press anything on the screen? It doesn't come back on from that either once I end the phone call, it just stays black. I'm assuming you don't have any other suggestions. This Sucks
Click to expand...
Click to collapse
: / sorry. i am unsure.
maybe you have a lose connection?
sh4d0w86.
This has to be a software issue but I don't know where to start. I'm surprised nobody else has encountered this problem. I've grown frustrated of this issue because I don't understand why it's doing this. I have had the phone for almost 6 months only dropping it once 4 months ago and it wasn't a strong damaging drop that would affect anything inside. I guess I'll just have to go last resort and call warranty to swap the phone out. Thanks for the help.
Same problem
themasterhook2000 said:
This has to be a software issue but I don't know where to start. I'm surprised nobody else has encountered this problem. I've grown frustrated of this issue because I don't understand why it's doing this. I have had the phone for almost 6 months only dropping it once 4 months ago and it wasn't a strong damaging drop that would affect anything inside. I guess I'll just have to go last resort and call warranty to swap the phone out. Thanks for the help.
Click to expand...
Click to collapse
My phone also dos not come back on, when I put it in out the sreen with the power button on top, or when the phone goes to sleep. Nothing can put it back on(opening te keyboard, pulling out the stylis, presing the answer-, windows-, back- and end button). I and up using a music players too keep the phone busy what's makes it operational. Cant really remember when this started happening exactly. My phone is at the moment loaded with a standard ROM. I used too have a custom ROM.
My TP2 does this too, although I only encounter the problem sometimes when someone calls. I answer and put the phone next to my ear, the screen goes black as it should and the phone just dies. I can't hear what the other person is saying and the screen wont turn on anymore. I have to take out the battery to reboot.
set light sensor to manual in settings. You have some bad or fragmented code causing the problem. Pretty common actually, many different reasons, but usually either a bad light or proximity sensor or software issue. Setting the sensor to manual should do it, if not, hard reset and allow the phone to fully set up before touching it, to allow full customization process to complete. Search my posts on SOD (sleep of death) for more information.
Funny this was brought up. Now im worried I just dropped 250.00 and have a new one coming.
Mine started with the ear piece quit working. couldnt hear anything except on speaker.
Anyway I started having the screen issue over a month ago, only way to get it back was soft reset with the stylus. Also when the screen was lit, I couldn't hit the power button to turn the screen off. At times the screen would be on 24/7 and I just dealt with it. The times when it decieded to go to sleep was when I needed the soft reset. Well long story short I forgot my charger one day at work and the battery died. after pressing the power button for hours with no response, moving the screen in all diffrent directions as I pressed the button.It came on once after hrs of messing with it. Well today it died again and I am fed up with it so out came the tools. Once I opened it up I noticed the ribbon that feeds the screen from the mother board was worn and torn. the ribbon slides everytime the keyboard is slid out and it rubs on both sides of the phone. I thought maybe mine was just a fluke and was installed wrong considering the phone being 10 months old but now I read this and see maybe its a common problem. The cheapest I could find the Ribbon was 56.00 so I didnt want to chance it not being the issue.

[Q] Often unable to unlock phone as screen won't turn on when I try to wake the Play?

I've had this phone for 12 months (Typical! Just out of warranty! ), and I'm still running the initial stock ROM, however, all of a sudden last week whenever I took it out of my pocket and tried to unlock it, the screen stayed blank. Regardless of whether I use the power button or press Home, (or slide the gamepad out) it very often won't display the lock screen so I can unlock it. Occasionally it will display the unlock screen fine, but increasingly often it won't.
The phone is definitely still on, as if I press the volume keys I can hear it "Beep-BEep-BEEp-BEEP" as I push the volume at the side to turn it up. Occasionally after lots of trying it might come back and display the screen for me to slide-unlock, but most times I end up just taking the battery out.
Any ideas regarding what has caused this and what could maybe fix this? I've never dropped it, spilled water on it, or done anything other than it was intended so it's really puzzling and I'm concerned that when I receive phone calls I will be unable to answer them as a result.
Thanks in advance!
I guess it's the flex cable damaged.
jeff7424 said:
I guess it's the flex cable damaged.
Click to expand...
Click to collapse
Is there a way to tell for certain before I attempt to replace this? I just got a phone call and was able to answer it by dragging my finger across the screen, however the screen was off. So the touch screen is still functioning. It's not the backlight as the screen is definitely still "asleep" and under light you still couldn't see any pixels. It's as if the display is asleep and isn't waking up. I have a feeling it's to do with the phone's ability to slide open, but I'm not sure.
Thanks.
Touch screen still working so means the screen or the flex cable is damaged. But most probably is the flex cable because of the design, lots of people having this issue.
As the above poster said might be the flex but the whole LCD might be dameged hold it under intense light and and watch the LCD power on when the phone turns on if not well...
Sent from my GBTweaked V7.1 R800x using Tapatalk 2
My Xperia play won't slide to unlock I have taken out the battery multiple times trying to fix it but still nothing the screen is on I can hold down the power button and select options everything works except being able to unlock the phone??someone please help!!?

Help: G3 doesn't power on - Only blue/green notification light blinks :(

The G3 just dropped down on the floor with the circle case. Then It was working some minutes apparently with no problem, until I myself turn the phone off and restart it. Then the device just didn't turn on. The only thing is that the screen is black and the led notification blinking green and blue
when i connect the charger, the red led blinks once and then disappears, then after 30 seconds the red led appears which apparently shows that the phone is charging the battery. Also When I connect the phone to the PC, a sound of connection is heard from PC but the PC doesn't complete the device recognition process as no new device is found.
I tried to make a hard reset, but nothing happens when I press the power and volume down keys. Tried some other tricks with the battery and the hard keys on the phone but no result at all, as the same story just repeats. Does anybody have a solution for the problem? This devise is the only android device I have
Help
Please Help :crying:
ashkaboos said:
The G3 just dropped down on the floor with the circle case. Then It was working some minutes apparently with no problem, until I myself turn the phone off and restart it. Then the device just didn't turn on. The only thing is that the screen is black and the led notification blinking green and blue
when i connect the charger, the red led blinks once and then disappears, then after 30 seconds the red led appears which apparently shows that the phone is charging the battery. Also When I connect the phone to the PC, a sound of connection is heard from PC but the PC doesn't complete the device recognition process as no new device is found.
I tried to make a hard reset, but nothing happens when I press the power and volume down keys. Tried some other tricks with the battery and the hard keys on the phone but no result at all, as the same story just repeats. Does anybody have a solution for the problem? This devise is the only android device I have
Click to expand...
Click to collapse
Did you do anything else after/during the time that the phone was off? And is there no possibility that you cracked the LCD digitizer? I mean it might sound strange but this is what I had with my old phone. I dropped it, nothing serious but then I put it in my pocket and upon taking it out I noticed the screen not turning on. As stated above, my digitizer was broken and multiple people told me that the digitizer had a small crack which I didn't notice, then when I put it in my pocket I put too much pressure on the digitizer cracking it. The LED-light did work though, and this sounds very similar so my advise going to the store and asking wether they know what the problem might be.
(Hopefully this was helpfull hehe)
ashkaboos said:
Please Help :crying:
Click to expand...
Click to collapse
If you Don't see the LG splash screen when pressing the power button it seems like a screen or digitizer problem for sure.
BUT;
after you try turning it "on" let it sit a few minutes and see if you can call your self or send a text to see if it makes noise vibrates etc. to confirm a screen problem.
OR
Also you can try putting it into download mode.
Battery pull (don't turn on)
plug USB into phone but not computer
Hold volume down AND then plug usb into computer
if this comes up to a pic of something on the phone it will be software related. to get out of this mode you can do a battery pull.
Remember to always read up on topics and things you are doing. There are guides here on XDA to help you out.
Hope you get your phone working
Neorpowa said:
Did you do anything else after/during the time that the phone was off? And is there no possibility that you cracked the LCD digitizer? I mean it might sound strange but this is what I had with my old phone. I dropped it, nothing serious but then I put it in my pocket and upon taking it out I noticed the screen not turning on. As stated above, my digitizer was broken and multiple people told me that the digitizer had a small crack which I didn't notice, then when I put it in my pocket I put too much pressure on the digitizer cracking it. The LED-light did work though, and this sounds very similar so my advise going to the store and asking wether they know what the problem might be.
(Hopefully this was helpfull hehe)
Click to expand...
Click to collapse
I didn't do anything special after/during the time the phone was off. I checked the screen very carefully under a lamp. No particular sign of crack. Thank you very much for sharing ur experience.:good:
Tweakecho said:
If you Don't see the LG splash screen when pressing the power button it seems like a screen or digitizer problem for sure.
BUT;
after you try turning it "on" let it sit a few minutes and see if you can call your self or send a text to see if it makes noise vibrates etc. to confirm a screen problem.
OR
Also you can try putting it into download mode.
Battery pull (don't turn on)
plug USB into phone but not computer
Hold volume down AND then plug usb into computer
if this comes up to a pic of something on the phone it will be software related. to get out of this mode you can do a battery pull.
Remember to always read up on topics and things you are doing. There are guides here on XDA to help you out.
Hope you get your phone working
Click to expand...
Click to collapse
I tried to put it into download mode, but no result at all as no connection could also be made between the phone and PC. Moreover, I tried to make a text/call, but nothing is received by the phone. Thank you very much for ur suggestions.
ashkaboos said:
I tried to put it into download mode, but no result at all as no connection could also be made between the phone and PC. Moreover, I tried to make a text/call, but nothing is received by the phone. Thank you very much for ur suggestions.
Click to expand...
Click to collapse
Seems like the drop damaged the memory and the phone can't reload it, you will have to bring it in
suljo94 said:
Seems like the drop damaged the memory and the phone can't reload it, you will have to bring it in
Click to expand...
Click to collapse
Yeah that's plausible ! I'd bring it in too
Hope you fix your phone fast
Yeah... Probably it's a hardware problem. Someone who checked the phone in order to fix it, said that the problem had been with the device board. Even though I was satisfied with the phone, I have found out that the G3 is a sensitive device, as the height of the table from which it dropped down wasn't too much. So always take care of your G3 phone.

Lg g3 screen stays black after reboot, but responds to touch

My wife's phone looked completely dead this morning, so I pulled the battery and then rebooted. The led did its usual start up pulse but the screen remained black.
Double tapping to wake, then tapping the centre of the screen where login field is, then tapping where the keyboard is, results in haptic feedback, but the screen never turns on from black.
Tried holding down + power to boot into recovery, but no idea if it works. No response from the screen.
Anything I can try? :crying:
judith prietht said:
My wife's phone looked completely dead this morning, so I pulled the battery and then rebooted. The led did its usual start up pulse but the screen remained black.
Double tapping to wake, then tapping the centre of the screen where login field is, then tapping where the keyboard is, results in haptic feedback, but the screen never turns on from black.
Tried holding down + power to boot into recovery, but no idea if it works. No response from the screen.
Anything I can try? :crying:
Click to expand...
Click to collapse
Its the faulty motherboard chipset issue, same as me.
Take the phone apart and place a piece of plastic or something on top of the display ribbon connector underneath the battery. That solved this problem for me.
Seems to occur because the board in the g3 has too much space to flex etc in general usage.

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