Hardware Issues after replacing battery, USB/Audio connectors & main board
Need some help, and figured you guys would be the right people to direct me on a fix or at least narrowing down the cause of the problem
Phone - Verizon G2 v980
TLDR - replaced 3 different parts, and now phone display won't show anything - just black.
It all started when I was having some audio issues with the headset jack being loose, and headphones and aux output disconnecting easily and often. It was pissing me off, so I decided to replace it. (I'm no stranger to tearing apart and fixing small electronics but I never worked on the LG G2.
I figured since I was going to open it up, I'd replace the battery at the same time, and bought both off ebay.
When they finally arrived, I opened up my phone following a couple videos I'd found online (btw, no little black screw in mine, as it was a refurbed replacement via squaretrade.)
Unfortunately, through a combo of cheap 3rd party battery with a very stiff ribbon cable, and my clumsy fingers, I managed to destroy the logic board's battery connection port.
So I went on ebay to find a new board... I found a used verizon 32gb (mine was 16gb) board and got it delivered.
When I put it together, something is not working right, but I can't be sure what it is...
I think the board is bad, but am not 100%.
Screen is black
I can connect the phone to my computer, and it will autodownload the LG Verizon software, and show up in my file explorer. There's some files still there, but it looks like it was attempted to be cleaned, but not factory reset wiped (some personal data still there) but the dates are all showing 1970ish....
I have the phone connected up to the original charger, and the notification light pulses light to dark red as it charges up.
When I plug in the charger, I hear a buzz, and sometimes even a tone.
I hold down the power button, and eventually it vibrates again, and the notification LED pulses blue & green, and there's a brief backlight looking light with some vertical lines, another buzz and black screen. I'd think it was shut down, but it still shows in the computer, and the light to dark red pulsing continues (charging?)
knock on doesn't work
Should I return the board?
Saw some other threads about the proximity sensor, so I can check that out, but I didn't touch the screen...
Thanks in advance!
Update
No difference with proximity sensor disconnected.
With the old board in with busted power connector wedged in, it does nothing, except when plugged in, where it buzzes repeatedly.
Related
So here is my story. I installed a new digitizer for my broken HD2 screen, and ended up creating a crease on the ribbon cable. I managed to also break off half of the lock-in bar (the black bar) on the socket, but it still locks half of the other pins down and in place.
Heres the problem.
I turn on the phone, and the screen lights up but doesn't show me my display. The backlight IS on, but isn't showing the bootup, or anything. I DID manage to get it to show the screen by messing with the cable, but only for a few seconds and then it wouldn't anymore. The phone functions fine, I had a friend send me a text and the phone vibrated, and when I pressed the lock button it locked and unlocked (for my Android ROM). I know it did this because the backlight would turn on and off on the LCD.
Would buying a new LCD fix the problem or does that little black bar on the socket matter? I figured all it did was lock the pins in place so it shouldn't be a big deal..
there is 3 ways out of that.
One put a tape over the back side of the flex. it might work sometimes, but not reliable
Two buy a new socket from ebay and resolder it.
Three hardcorely wire them. It is possible I fixed a broken volume flex before.
the lock does not just hold the cable in place it also pushes it down on the contact face.
You may be able to pack the ribbon on the back to help it fit tighter in the sock & increase pressure to the mating faces, hopefully the rest of cable is serviceable ! extra lock security can be added with tape & ribbon can be reinforced with tape too if helps.
My buds Droid 2 back light doesn't work anymore as well as the touch screen digitizer. Is the back light in the LCD itself or is that a seperate part? I told him I would fix it and I need to know what to order.
I'm having a similar issue, My wife got the phone wet, so we dried it out. That part went well....
Well she got a new phone, and I put the Droid 2 in a draw, and recently found it again, deciding to look it over, I charged it up, turn it on.
Here is what problems it has, No Backlight on the LCD display, No LED Nofication lights, No keyboard lights, No Digitizer touch.
The phone boots and works, sounds work, OS is intact and under a flashlight I can see the screen.
my question is does the ribbon cable control all of these? or are the seperate problems?
So this was my first breakdown of a phone...my brother gave me an HD2 with a non-responsive digitizer, everything else seemed to work just fine.
I disassembled it, accidently tearing the flex cable after it gets thin and goes to the volume buttons. Anyway...I replaced the digitizer...thinking I could just modify the volume via software controls, and stupid me had previously set the hd2 to boot into magicdlr always when the phone turned on. So when I turned on the phone I couldn't do anything because it would boot into magicdlr and I had no volume buttons to scroll up and down, and the option selected was boot into windows which was not on the phone (only cm7 was at this time).
Anyway...after getting a replacement flex cable, and reassembling everything, I couldn't get the lcd to work. Backlight would light up, but no picture, no sound, just a vibrate and the backlight turning on. I tore it down, triple checked all the connections, and still the same thing
So I tried a seperate lcd assembly, tripled checked all connections, and still same issue as the above paragraph, backlight but nothing else when I try to power on. I also retried the old flex cable (the one without the volume connector) and that didn't make a difference either.
My only guess is that I messed up the lcd connector on the mainboard, even though it doesn't look visibly damaged in anyway. Does anybody have any other ideas/suggestions?? I would love to get this up and running as its been my first smartphone project...I've done lots of works on desktops and laptops but never smartphones.
gdawson6 said:
My only guess is that I messed up the lcd connector on the mainboard, even though it doesn't look visibly damaged in anyway.
Click to expand...
Click to collapse
This is my suspicion too!Even not visible at first sight, try again with a magnifier!
Good luck!
Guys, I bought and replaced the charging dock from my N9005, because mine got damaged in a tragic accident involving me, the charging cable and the phone itself... Now, after the replacement itself, I have noticed that my loudspeaker does not work at all (missed my alarm this morning, thought I overslept, but I had later on the phone in my hand and it rang... but without sound.
After a bit more tinkering, I have noticed that if I just put the back panel (the one that contains the speaker) on top of the phone and press gently, it works, but if I put in the screws and push it properly, it stops working.. So my option right now is to either leave it flimsy (too flimsy for the back cover to be put on top and still function), or to not have a speaker at all. Any suggestions, what I did wrong, or which one of the two components you guys think might have been the one to break? The new charging dock, which also contains the contacts for it, or the speaker's connection itself? I took as much care as I possibly could when I did it, but still... Help, please?
help?!
Screen on my G2 was totally cracked up but the LED notification light still worked. Was red when I plugged in the charger. Was green when I turned on phone.
Got the screen replaced and now the LED notification light doesn't work. Charge the phone and no red light. Turn on the phone and no green light. Options for LED is turned on.
Is the notification led integrated into the screen? So I may have a faulty replacement screen?
Also read that maybe a factory reset may work but thats a last resort to check cuz I don't feel like setting phone all up again.
On a side note..do those screen repair stores you find in the mall usually use OEM or crap quality replacements? Je told me oem but i trust no one. Noticing as I press keys as i type I see parts of screen near finger get a little darker like if u press down on a LCD screen too hard. Other than that the screen is fine so far.
vice86 said:
Screen on my G2 was totally cracked up but the LED notification light still worked. Was red when I plugged in the charger. Was green when I turned on phone.
Got the screen replaced and now the LED notification light doesn't work. Charge the phone and no red light. Turn on the phone and no green light. Options for LED is turned on.
Is the notification led integrated into the screen? So I may have a faulty replacement screen?
Also read that maybe a factory reset may work but thats a last resort to check cuz I don't feel like setting phone all up again.
On a side note..do those screen repair stores you find in the mall usually use OEM or crap quality replacements? Je told me oem but i trust no one. Noticing as I press keys as i type I see parts of screen near finger get a little darker like if u press down on a LCD screen too hard. Other than that the screen is fine so far.
Click to expand...
Click to collapse
No its not.
Its a seperate part that attaches next to the selfie camera on the logic board.
Looks like the shop was in a hurry and forgot to connect the LED
As for the screen, I can say you have an aftermarket non OEM.
OEM they use LOCA or OCA to bond the Digitizer to the LCD.
By doing so, you have no weird darker/lighter effects when typing on it.
Just like the stock screen.
If you have those effects, I would recommend you have them replace the screen with one that's OEM and not an aftermarket.
My first screen repair story went like yours only I swapped it in myself.
Come to find out the seller sold me an aftermarket screen claiming it was OEM.
I had him refund me for it since I called him out on it quickly
Darn...hate confrontation so was hoping it was part of the screen so i can easily tell him to fix. Now he can just tell me it probably wasn't working due to dropping it but I know it was working. Could always fight the charge on my credit card if he's unwilling to do something about it.
As for aftermarket..i can tell him what you told me but he could jsut stick to his guns, lie and stay "its OEM" and probably nothing i can do about it.
Thanks for the info!
Using a light...it looks like there's nothing in there where the sensor/LED shoudl be..its like i can see to the back of the case.
EDIT: Opened up...the whole proximity part is missing!! I'm assuming the LED light is part of that since that's not working and its right next to it.
EDIT2: I guess the IR blaster is part of that too...lol
Thing that pisses me off now is that he didn't put in my factory stock part and will replace it with a possibly crappy aftermarket part.
I'm demanding some money back for this nonsense.