Replaced Screen Frame, Wont Turn on at all - LG G5 Questions & Answers

I had an odd issue with my lg, as it was how i bought it. The screen was never able to do full brightness. I eventually just bought a new screen frame for the phone, and well. Now that i got it installed. I get no buzz, no lightup, nothing. Tried plugging it into the charger, holding the power button for many more minutes then probably necessary, and pretty much any possible button combination. Is it possible the board somehow magically fried when I replaced the screen frame? I'd certainly hope not, and hope this is something i can manage to fix. I've also tried using the old screen frame, and it yields the same results as the new frame.

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[Q] Streak 5 not displaying anything

So, being clumsy, I left my Streak in my hoodie pocket. Well, we can all see where this would end badly once I bent down to pick something up. I did, dropped my phone and cracked the screen.
I quickly went and bought a replacement glass + lcd display, and replaced the unit. But, upon turning the phone on, I noticed if I hit it a little too hard on one corner, It would restart, and the vibrator motor had ceased to work.
So I figured, hey, I'll just rebuild it again. So I took it apart. Looked through everything, took my time in putting it back together, because maybe everything wasn't fitting snug.
Now, When I turn it on, every thing is on, buttons light up, and the screen is lit up, but it is black. I never even get to the Dell logo. After about a minute the buttons dim, as if in idle. So i believe the phone still works, but maybe the connections on the MoBo is faulty? Any help would be nice, thanks.
check to see if the ribbons are snugged in place.
mofoahh said:
check to see if the ribbons are snugged in place.
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I agree take it apart and chech your work. I had problens with my camera and flash. It was tge connector not being fully seated
Sent from my Dell Streak using XDA App
Well, I just took off the rear cover and reseated all 3 connections, pushed em in as smoothly and far as they would go. But, same thing. Black screen. But the LED is still working...
I'm having the very same problem. This is my second replacement screen and neither displays anything except black screen with backlight on, and the home + settings + back buttons remain lit. I can hear my phone starting up and receiving messages, but I cannot see anything. I've taken the phone apart and put back together five times between two replacement screens.
Does anyone know what ribbon cable might be at fault for this particular issue? The largest ribbon cable was shipped bent across the circuit board on both screens; there is a permanent creese in both ribbon cables, but I'm not certain this is causing the issue.
Any insight or assistance with this issue would be greatly appreciated!

[Q] Help! broke scree

So dropped phone and screen went out. Replaced amoled and digitizer, device powered on and lit up home keys, but no display still. Replaced main board, in case video was out on board, but no joy. Any thoughts? No custom software or anything....
Maybe you didn't clip on the ribbon cables all the way. Or, just try pulling the battery and booting it again.
When I replace my screen, screen didn't work for first few boots.
ddochi11 said:
Maybe you didn't clip on the ribbon cables all the way. Or, just try pulling the battery and booting it again.
When I replace my screen, screen didn't work for first few boots.
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I checked and checked, digitizer works, I can reboot and swipe unlock, adjust volume, but no screen. At this point I'm thinking bad LCD. Thoughts?
Thx for response and ideas though....
I bought a replacement but ut was a cheap fake, not an OEM screen. It went purple then black within 10 minutes. I got my money back (thank you PayPal) and made sure the next one was an OEM screen.
I hope you didn't spend too much on the repair parts. You can pick up a new Note for about $290 now.

LCD Backlight is on but there's no video output

Hello!
My phone fell from a high place some weeks ago and the screen shattered. Touch was unresponsive, clicking everywehere, but LCD was fine, i could see everything on screen normally.
Ordered a new screen. Changed it, but when I turned it on, only backlight of the LCD was visible, but it was displaying nothing. I thought it was a defective screen (either way, it was, lots of stuck pixels), sent it back and bought another from the same seller. When I changed it and turned it on, again, no video output, lcd would light on but woundn't display nothing on screen. Googled a bit, found out it could be a defective fuse on the motherboard, and that soldering it again would solve. I know nothing about this kind of stuff, so I picked up a tweezers and apllied a little force on every fuse, because I thougth that way I could try to solve it. Well, it worked, kinda. I put the screen above that blue plastic glue only for testing, and it worked, I felt reliefed for seeing sony boot logo again. Figuring out it had worked, i took out the screen, took out the blue plastic, and glued the screen back on. For my surprise, it had the same problem as before, and it doesn't matter what I do now, it wont work anymore, only displays a black backlight with no video.
Could anyone help me out with this? Give me a hint of why it worked once but not anymore. Could it be there's really a defective fuse, or it was just a coincidence that it worked after it had force apllied? Also, the Screen flex is kinda loose, it keeps coming off all the time, and it's really hard to plug it to the LCD sometimes, is it supposed to be like that, or could it be the culprit? Also, touch is working normally, i can't see nothing on screen but i can click and feel it vibrating.
It's kind of a big text, but that's the way I could explain it. Sorry for the bad english, it's not my native language.
And thanks in advance if anyone can help!

Totally black screen

Had to do a battery pull last night. Had my phone in my pocket for probably an hour, when I pulled it out the screen was black. LED would flash ocassionally and I think I heard a text so everything was fine except the screen. I have Always On off, and I require either fingerprint, a pin, or OK Google voice recognition to unlock.
Tapping the screen, hard pressing or fingerprinting the power button, volume buttons all did nothing. I guess there's a dialog for powering off the device so holding the power button didn't reboot it either. Eventually pulled the battery and it rebooted fine.
Anyone else had this? Pretty disappointed. Haven't installed any new apps in the past few days. I've heard (and had once) a related issue where the phone takes a lot of presses to turn on the screen—in that situation, Always On is on, it's in your pocket so the phone detects and turns off Always On, and for some reason when you pull it out it very infrequently takes a little while to come on. No idea if they're related.
Do you have a screen protector, skin or case installed? Maybe it's causing issues with the sensors in combination with something else?
raynan said:
Do you have a screen protector, skin or case installed? Maybe it's causing issues with the sensors in combination with something else?
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Have a case and a glass screen protector but they are not new.
Sent from my LGLS992 using Tapatalk
This just happened to me yesterday. Dropped the phone, and it stayed on but the screen is completely black. I opened it up and tried re-setting the display ribbon cable, but that didn't do anything. Anyone have any ideas what the problem might be?

[Q] lg g3 coloured strips on screen

Hello XDA.
The screen on my LG G3 Verizon (vs985) has been acting weird and I really would like a second opinion about if I have a screen issue on my hands or if it is a motherboard problem. I included pictures below.
Screen responds to double-tap-to-wake, and buttons still work. I'm able to turn phone off by pressing power button (as long as it normally takes to display Power Menu), then tapping on where the Switch Off button ought to have been displayed. Apparently, motherboard sends stuff to screen, but screen unable to visibly display it.
I've been using motherboard since it was bought new 6 months ago so I really doubt it's the motherboard, but I could be wrong. Screen is over 4 years old. The best way would have been to try another trusted motherboard (if screen is still not normal, then it's DEFINITELY screen's fault). So in the absence of such a conclusive test, I would appreciate opinions.
Thanks.
Pictures (L-R): When booting (picture taken with flash), when booting (picture taken without flash), after booting into Android, phone charging with screen switched off.
SOLUTION: It turned out to be a screen problem (screen was replaced and voila!).

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