[Q] Phone works, screen does not yet sometimes it does - LG Optimus Black

Hello
One night I was using the phone without doing anything special , some video watching . Phone went dark, tried to reboot. Blank Screen and the capacitive buttons flash. Left it to charge all night, in the morning it started but after I pressed the lock button blank screen but phone still working and receiving input.
Took the battery and SD card out left it for 30 seconds then started it again, Stuck at LG logo. Repeat , phone started ... Pressed lock button once then again to unlock , screen wouldn't start.
Used LG Mobile Update recovery tool to restore it ... Didn't solve problem. Sometimes it does not even start , just flashes buttons, other times it does without screen and last all works even the screen until first time goes dark , in the last two cases I can use LG On-Screen Phone without trouble, in doing so I installed a proximity sensor test app to see if it was causing my screen to not come back on , the sensor looked fine.
Facts:
1. Two day old Optimus Black p970, worked like a charm until stated problem
2. The app that checked proximity sensor showed the sensor to be free when my hand wasn't on it
3. The warranty laws in my country are idiotic so I would do or buy anything rather than send it so they can give me a new one in 3 months.
4. Tried another battery from another Optimus, fully charged nothing different.
5. Stock rom.
Do any of you fine people have some ideas on how to fix this? Thanks in advance

Hi there...
Sometime ago [1 year and a half or so~] I worked at a cell refurbishing facility [there were samsung, motorola and palm devices from sprint] and that problem you have was quite usual. Blank screen, still the phone is somehow usable like reciving calls...
There's this thing called "flex" which is the connector between board and display and that is what we fix, most of the time not even "fix it" just getting it in the right place...
This happen because of excesive use in those sliding or clamshell devices, in OB could be for overheating, you could try to fix it yourself or pay $20 usd [that's what it cost here]

Would that connector explain the fact that sometimes it doesn't start at all? hmm I am thinking now and I guess if it moves and somehow the phone feels it has not display connected it could fail to start... Anyhow thank you

actually yes, it could be only for the flex [some devices don't start at all when not having display or keyboard if there's any] but since our OB is not sliding nor clamshell type probably was overheating.
you say you have stock rom, well now I'm using CM7 but when I was at stock and after using the phone a few minutes it felt warm and some more minutes [like playing gunbros where you need to use both hands and a lot of movement] it was really hot and had to stop playing for a while.
what I'm trying to say is that because of overheating flex could have moved, but because of overheating too may have move something else, you couldn't belive the huge number of micro-things that reside in the board.
so if it's only the flex, it's an easy task to do, just unplug and plug again, but if it's something else it's quite hard to know just looking at it, you need to do some electric measures and stuff, the recomendation is to take it to a tech center or something

Hi. I Have same issue. Two times when i press power buton, butons flashing and screen still black. Phone not responding. I must remove baterry.
Sent from my LG-P970 using Tapatalk

Hi there, got the same problem too with my optimus black. Screen goes flickering, shut down don't do any good, and the phone temperature is kinda hot. But in my case it work after I clean some cache and data in the phone storage through LG OSP. After that, the phone temperature back to normal and the phone screen back to normal also. I believe that in my case the phone is overheated.

Related

[PROBLEM] Died?

Hey guys, I was wondering if somebody would be able to maybe help me diagnose the fault\problem part with my non-working diamond...
Basically I went to a club one night and the place was unbelievably steamy / humid. My phone was working one minute and then the next it wouldnt display anything on the LCD. The backlight was working however.
Since then I havent been able to get an image on the screen although when trying to turn it on, it seems to go through its startup sequence (backlight -> vibration -> beep (i think))
I havent had any power to the phone since a day after it broke (a few weeks ago).
I'd like to get it back working again but dont know exactly what part i would need to replace. I'm fairly competent with electronics .
Any help/advite would be appreciated!
Haha, ok that's odd...
I've plugged it into my pc to get some data files off about an hour ago.. forgot about it and just looked at it now and the screen is displaying!
It is displaying and accepting input although it was flickering at first (like pixel shifting). but i pressed the power button to standby the screen and pressed it again and the display is fine with no flickering ?
Ive moved the phone about and shook it quite hard to see if there's any loose connection but the display still seems fine..
Anybody have any ideas as to what it may be?
I'm not going to deem it as fixed until I know what the problem was/is lol
cheers guys
Ok screen actually keeps flickering nonstop, and sometimes 'fades away' to gray/white/black
comes back after a few seconds though
Looks like a faulty connector?

[Q] Milestone screen not responding

I have had my Milestone for a while and it is out of warranty. Recently a narrow strip on the right side (when held vertically) of the phone has stopped responding to touch. It has decommissioned the search softkey, the backspace, L and the P key of the keyboard.
However, I have noticed that the touch response on the left has increased. For instance Q, A, and Z keys respond even if i touch the black edge of the screen, this goes for the back/return softkey as well.
This leads me to conclude that somehow my phone's inner working's alignment to the screen has been disturbed.
I have tried several roms...CM7, Froyomod and stock froyo but the problem remains.
I did use a third-party car charger once that gave me the ghost screen issue. Draining the batter to 0 with the app Battery Refresh and charging it to the full with Milestone charger solved the issue.
I'm in Bangladesh and there is no moto here...there is no support and sending the phone abroad for a fix is not an option. I'll have to fix it myself or save up for a few months to buy something else...not a bootloader locked moto again.
So, any suggestions? or directions I should be going or looking at?
1. The ghost touch appeared for me, too, after flashing FroyoMOD. I left the phone for ~a night slided-out, without battery, micro SD, SIM etc ) and it worked fine for ~5 days. Then, the same right side stopped working. We don't actually know what is the problem (moisture, bad charging, wear of the flex cable, defective digitizer) and we also can't be sure if we replace the digitizer the problem won't appear again. So, I suggest that you should sell the phone.
2. You could get an i9000, an LG 2x or a Desire HD.
L.E. I'm 95% sure that this isn't a software issue, so flashing different ROMs wont help.
same issue...
solution: dumped stone, got galaxy (Y)
My milestone eventually died. No M logo even. Thinking about getting a Huawei U8500 as an interim phone before I get something good.
Try Iphone insted
Once I got the same problem, it was not on the edge, but the middle of the screen & U, J & N keys stopped working. It was under warranty so I got the things replaced.
Touchwood

Screen not working

Hello,
I have sent my gnexus off to be repaired this week and recently started to use my old milestone until my other phone is repaired. Phone was working fine, a little slow to my nexus but it was better than nothing. I was checking my emails and stuck my phone in my pocket to cross the street, when I pulled it out again, the screen would light up (glow) but the screen was black, I tried pulling the battery and rebooting but to no avail. I can feel the phone vibrate when I slide my finger across to unlock it and tap icons, but nothing is being displayed. I'm wondering if anybody else has had something like this happen and if it is possible to fix relatively easily?
If you don't get anything on the screen anymore I'm afraid it's a hardware failure.
Maybe the connector cable is broken (partially), I guess...
I guess Eiertschik is right.
In the boot process, does the M logo show up?

Verizon LG G2 Screen Issues... NOT the turn on then off issue

I have recently purchased this phone via swappa and haven't had any issues prior to this and that has been three weeks (other than a light leak).
The issue that is happening is the LCD will not turn on. When the phone is unlocked via knock on or power button you can move your finger over where the lock circle would be and feel the vibrations showing that it does register the touch. Then usually I would just hold the power button till it rebooted and this would sometimes fix the problem, on a side note the boot LG logo and boot animation do not show up during this time simply the lock screen would randomly appear.
That is problem, now on to what I tried to fix it. I have put on an entirely different rom and the problem persists, I have also flashed a different kernel on the stock rom with no avail. I at first thought it could be due to a faulty proximity sensor, but the last time the screen was on I checked it with sensor box. One way I have been able to reproduce the problem is after locking it putting it in my pocket and waiting around five minutes, this then will make it so the LCD does not turn on ( Which makes it seem like it has something to do with deep sleep). Also something I just found since I was actually able to find the power off button, the screen also won't turn on when the phone is off and plugged into the charger (this makes it seem like hardware issue). It seems like as long as I keep the phone from going to deep sleep the LCD will turn back on.
Some of this makes it seem like a software issue other things make it seem like a hardware issue. I just was wondering if anyone had any ideas or if I need to buy a new screen, if the mobo is bad, or if I could fix this with software. Any and all ideas are welcome.
Thank you all in advance.

[Q] LG P990 Touch screen stops working until reboot

Hi everyone, I was hoping I could get some help with my LG P990 (Optimus 2x), I recently changed the screen and digitizer (it was broken so I replaced it myself with a new original one).
The thing is that since then sometimes the digitizer just stops working. The screen works, the buttons (screen lock and volume up and down) works, but the touch screen is dead. Obviously I can't reboot the phone so I take off the battery and put it back, the phone shuts down, reiniciates and there it goes, everything is good again, working perfectly... until it stops and the whole thing goes like this over and over...
Any clues of what might be causing this? I think it should be something software related since the digitizer works PERFECTLY until it kinda freezes... but I'm not sure, really not a smartphone guy so...
Thanks a lot!
P.S.: Tried to use the developer tools > locate pointer function and touched everything everywhere accross the screen and it's fully working, no dead zones, so the problem is "random" i mean it just stops working randomly, and I also didn't notice any patterns like "it freezes when i'm doing something specifically" it's totally random, happened when receiving a call, when making a call, while playing a game, while just browsing through the menu, while trying to unlock the screen... at least APPARENTLY random, maybe something i didn't notice if I do, i'll add later...
gutavu said:
Hi everyone, I was hoping I could get some help with my LG P990 (Optimus 2x), I recently changed the screen and digitizer (it was broken so I replaced it myself with a new original one).
The thing is that since then sometimes the digitizer just stops working. The screen works, the buttons (screen lock and volume up and down) works, but the touch screen is dead. Obviously I can't reboot the phone so I take off the battery and put it back, the phone shuts down, reiniciates and there it goes, everything is good again, working perfectly... until it stops and the whole thing goes like this over and over...
Any clues of what might be causing this? I think it should be something software related since the digitizer works PERFECTLY until it kinda freezes... but I'm not sure, really not a smartphone guy so...
Thanks a lot!
P.S.: Tried to use the developer tools > locate pointer function and touched everything everywhere accross the screen and it's fully working, no dead zones, so the problem is "random" i mean it just stops working randomly, and I also didn't notice any patterns like "it freezes when i'm doing something specifically" it's totally random, happened when receiving a call, when making a call, while playing a game, while just browsing through the menu, while trying to unlock the screen... at least APPARENTLY random, maybe something i didn't notice if I do, i'll add later...
Click to expand...
Click to collapse
I have EXACTLY the same problem. Did you fixed it?

Categories

Resources