LCD still not working after replacement? - EVO Shift 4G Q&A, Help & Troubleshooting

Just wondering if anyone here could shed some light on this matter. My daughters shift LCD appeared to stop working. So I replaced it to no avail. Still not working.
sent from my future SPH-L900

Asthmatik said:
Just wondering if anyone here could shed some light on this matter. My daughters shift LCD appeared to stop working. So I replaced it to no avail. Still not working.
sent from my future SPH-L900
Click to expand...
Click to collapse
Did you do it the replacement yourself ? Or did you have it done ? The reason I'm asking is because if you replaced it yourself, did you happen to check the Flex Cable ? That is usually the cause of the Screen acting weird, or not responding. If the Flex Cable is cracked, or Split it does not work correctly.

prboy1969 said:
Did you do it the replacement yourself ? Or did you have it done ? The reason I'm asking is because if you replaced it yourself, did you happen to check the Flex Cable ? That is usually the cause of the Screen acting weird, or not responding. If the Flex Cable is cracked, or Split it does not work correctly.
Click to expand...
Click to collapse
Yeah I did it, I've had plenty of experience changing lcds and digitizers so no issue there. Guess ill have to open it back up and check the other cables.
sent from my future SPH-L900

Check out THIS thread. The Cable you want to really take a look at is partially shown in Figures One / Two where it connects. It is the Flex Cable that connects to the Keyboard. They are know to wear / crack over time form the KB being slid in, and out.

Related

Screen Problem

Hi,
My phone has a problem, i hope someone can help me, it started about a month ago,
When i slide the keyboard the screen would freeze, the image would freeze or sometimes it would become like this:
http://www.esato.com/board/img.php?id=140762 ( this is not my phone its just a pic i found)
This problem would be solved it i gently slide the keyboard back in, the screen would be back to normal, sometimes i had to slide it out and it
alot of time to make it work.
Well, today i woke up, with the screen of my phone all messed up ( like in the picture), i slide it out and in alot of times but no luck.
I turned my phone off, when i turned it on, the screen doesnt lighted up or showed something, the phone just vibrates, i took off the battery and tried again but no luck.
I read somewhere that i could be the flex cable, so i ordered one, but its gonna take some time to arrive.
Anyone had this problem before that can help me?
I didn't encounter such problems on MT4GS yet. But being a slider phone enthusiast I could 100% say it's a flex cable thing since I encountered that problem more than a dozen times already on other phones(nokia).
Riyal said:
I didn't encounter such problems on MT4GS yet. But being a slider phone enthusiast I could 100% say it's a flex cable thing since I encountered that problem more than a dozen times already on other phones(nokia).
Click to expand...
Click to collapse
Thanks for the info , when my new flex cable arrive i'll let everybody know what was the problem.
ShadyGame said:
Thanks for the info , when my new flex cable arrive i'll let everybody know what was the problem.
Click to expand...
Click to collapse
I would strongly recommend that you get a cable with the speaker already soldered in place....
+1 to that, get as much pre assembled as possible, this is about the most pain in the butt phone I've ever had the pleasure to disassemble. Read the last few posts here!
http://forum.xda-developers.com/showthread.php?p=35109055
Sent from my HTC Vision using xda premium
GoPadge said:
I would strongly recommend that you get a cable with the speaker already soldered in place....
Click to expand...
Click to collapse
is this one okay?
http://www.ebay.com/itm/121037327256?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
ShadyGame said:
is this one okay?
http://www.ebay.com/itm/121037327256?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
Click to expand...
Click to collapse
Yup. That one has the speaker, it's the black bar at the top with the silver sticker.
GoPadge said:
Yup. That one has the speaker, it's the black bar at the top with the silver sticker.
Click to expand...
Click to collapse
Nice, that the one i ordered, thanks for your help, ill report later how everything went when i receive the flex cable
I know this thread is from quite a while ago, but how did everything go? I'm having a similar issue.
GoPadge said:
I would strongly recommend that you get a cable with the speaker already soldered in place....
Click to expand...
Click to collapse
thanks for this bit of advice.
Disassembling the front of the phone is a pain. I'm a fan of spending $40 on ebay on a broken phone (where the screen still works just fine) and swapping out the fronts. That will get you a new flex cable as well. Otherwise, you risk having to get a new flex cable *and* a new LCD.
Agreed. First time disassembling front I was scared not to OVERheat phone internals. I ripped in half trackpad ribbon, damaged lcd back cover and got a lot of problems from it.
Then I bought broken phone with good front, but dead LCD. Second time I just lost it, I heated phone so hard that I got burns on my fingers, but it was worth it, LCD glue came off soo nice.
So better to overheat, then underheat when disassembling front LCD.

Broken lcd screen/digitizer

So, a few weeks ago my phone started acting weird. When I would open the keyboard, my screen would turn off. It did this for a few days, then it got worse. I couldn't even use my keyboard. Then, my screen would randomly start flickering... and now it just won't come on at all. The phone comes on, I can see the notification light blinking, but the screen won't come on at all.
I'm going to buy a replacement part for it, but I'm not sure if it's the digitizer or lcd screen. Anyone know which one it would be?
...at first...no digitizer, no display.
open the phone and check flex cable connection - maybe is poor connected.
If this not help then check flex cable.
CornholioGSM said:
...at first...no digitizer, no display.
open the phone and check flex cable connection - maybe is poor connected.
If this not help then check flex cable.
Click to expand...
Click to collapse
yeah i was thinking it could be the flex cable, but i haven't played with it much yet. maybe i will tonight and see if my flex cable is disconnected/bad... but i couldn't find any replacement flex cables (without a lcd display or digitizer) anywhere.
IF it was the lcd, what would the symptoms be?
check flex connection and let me know
Was you photon disassembled?
CornholioGSM said:
check flex connection and let me know
Was you photon disassembled?
Click to expand...
Click to collapse
previous to the screen ****ing up it was never disassembled
Where would you be finding replacement parts?
Thanks
the internet is an amazing tool
Someone in the forums directed me to this: http://www.etradesupply.com/motorola/android-models/motorola-photon-q-4g-lte-xt897.html
Maybe it'll help.
Egoista said:
Someone in the forums directed me to this: http://www.etradesupply.com/motorola/android-models/motorola-photon-q-4g-lte-xt897.html
Maybe it'll help.
Click to expand...
Click to collapse
hmmmmm good prices - keyboard with cover for $12 is very good.
....or you can simple use ebay
i have a spare Photon Q in working order for parts.
Because simcard mod didn't work, it's a pda lol hahahah
if you still need a screen, let me know, we work a prize out incl sending
Gojira-r32 said:
i have a spare Photon Q in working order for parts.
Because simcard mod didn't work, it's a pda lol hahahah
if you still need a screen, let me know, we work a prize out incl sending
Click to expand...
Click to collapse
....why not work???
Resistor gone after fail sim mod
Gojira-r32 said:
Resistor gone after fail sim mod
Click to expand...
Click to collapse
...this is not big problem...post me photo on PM
PM will send tonight after an hour or 2
flex cable
Corn,
Can i post photo of my flex cable, to let know what you think if its broken or not,
the black coating of the cable were ripped off caused by the heat and friction to the metal clip and body,
often i play game application and while xt897 condition is heat i slide it to reply an incomming message,
and im about also to but the parts from etradesupply.com is it recommended or is there another supplier you recommend for xt897 flex slide cable, this damage also happen to my xt862 the previous year.
CornholioGSM said:
...this is not big problem...post me photo on PM
Click to expand...
Click to collapse
jspdjanggo said:
Corn,
Can i post photo of my flex cable, to let know what you think if its broken or not,
the black coating of the cable were ripped off caused by the heat and friction to the metal clip and body,
often i play game application and while xt897 condition is heat i slide it to reply an incomming message,
and im about also to but the parts from etradesupply.com is it recommended or is there another supplier you recommend for xt897 flex slide cable, this damage also happen to my xt862 the previous year.
Click to expand...
Click to collapse
yessss no problem
i've always wondered if there is actually some way to buy flex cables replacements in case they break... so far, i have only found the whole frontal assembly which costs quite a lot and that includes the flex cables, turning what would have been a couple $ repair into a very expensive (and probably not worth) one
i got an old working photon q that i was keeping myself for spares in case...
if you want a part then PM me. x
need advise
CornholioGSM said:
yessss no problem
Click to expand...
Click to collapse
helo corn,.
can you please have a look to this http://forum.xda-developers.com/showthread.php?t=2580958
i'm confused how to release replace my flex cable
Is there a tutorial how to replace the flex cable with front camera as selled by parts4repair? Or is it really foolproof?
It seems to me like I'm facing the same issues as described in the start post, only in an earlier stage of degeneration of the flex cable:
1. Suppose, the Photon Q is turned on and in operation. When sliding out the keyboard only some millimeters, the screen goes black. If I press the power button at this stage (keyboard slid out some millimeters, screen black), the phone seems to crash and reboots.
2. Suppose again, the Photon Q is turned on and in operation. This time I slide out the keyboard all the way (no matter how fast). The screen goes black. Pressing the power button at this stage doesn't show any effect. Only after pressing it a second time, the Photon Q is awake again, showing me the lock screen - apparently no crash and no reboot!
3. Suppose, the Photon Q is turned on and in operation. I turn the screen off by pressing the power button once, then I wait for some seconds and slide out the keyboard all the way. When I turn on the screen this time by pressing the power button, the lock screen appears as expected and everything is working fine.
All these scenarios also work the other way round, i.e. you assume the keyboard is already slid out all the way and you perform the slide-in movement. Also, this is not a software issue as it behaves analogously during reboot or in recovery mode. Furthermore, I opened my phone. The flex cable was connected properly and I couldn't see any damage to the flex cable. So it seems to be an internal loose connection of the flex cable.

[Q] One X LCD Screen replacement.

So i am replacing my one x lcd screen.. bought the whole lcd and digitizer since looks like a pain to just do the digitizer.. i got the old one out, put the new one in and power up.. phone vibrates, but i dont get any sounds and no display on my screen.. i have check all my cables too many times, reseating each one, trying everything.. the other thing is once i push the power button to turn on the phone, it vibrates, makes no noises, but if i hold down the power button afterward, the softkeys start flashing several times.. do i just got a bad lcd or is it something more?
none?
3rdcoasttx said:
So i am replacing my one x lcd screen.. bought the whole lcd and digitizer since looks like a pain to just do the digitizer.. i got the old one out, put the new one in and power up.. phone vibrates, but i dont get any sounds and no display on my screen.. i have check all my cables too many times, reseating each one, trying everything.. the other thing is once i push the power button to turn on the phone, it vibrates, makes no noises, but if i hold down the power button afterward, the softkeys start flashing several times.. do i just got a bad lcd or is it something more?
Click to expand...
Click to collapse
Sorry I meant to reply to this yesterday but forgot lol
You need to sync your new LCD.
How do I do that? You may ask.
Plug your old LCD back in, dont put the phone back together, turn the phone on, while it's on, switch LCD's to the new one.
If I'm not mistaken, that should do it. Post back and let me know.
exad said:
Sorry I meant to reply to this yesterday but forgot lol
You need to sync your new LCD.
How do I do that? You may ask.
Plug your old LCD back in, dont put the phone back together, turn the phone on, while it's on, switch LCD's to the new one.
If I'm not mistaken, that should do it. Post back and let me know.
Click to expand...
Click to collapse
never heard of that before.. and unfortunately dont have the old lcd anymore.. i pulled it out a week ago before i got the new one and tossed it.. im going send back this lcd get a new one and hopefully it was just a DOA and not the phone itself.
3rdcoasttx said:
never heard of that before.. and unfortunately dont have the old lcd anymore.. i pulled it out a week ago before i got the new one and tossed it.. im going send back this lcd get a new one and hopefully it was just a DOA and not the phone itself.
Click to expand...
Click to collapse
Good Luck. I would assume if you asked on here you would expect to hear an answer you didnt expect or you'd have thought of it
But yes, there are 3 screen types from 3 diff makers. So if you bought a different one, you need to sync it or it will appear to be off. Digitizer will still work.
1) Green Flex (Sharp)
2) Green + Yellow Flex (Sony)
3) Yellow (AU)
try this one http://www.etradesupply.com/oem-htc-one-x-lcd-screen-and-digitizer-assembly-with-light-guide.html
Do instructions exist or are there any hints for the removal of the existing screen?
Videos on YouTube.
Tip: Keep track of where all the screws go. Have unlimited patience. Stay organized. Minimize distractions while working on it. Heed my screen sync post above.
Sent from my HTC One X using xda app-developers app
yeah, i followed the video instructions exactly. and youre right, i posted here to find solutions i never heard of or thought of. as far as syncing with old screen i am SOL on that one.. i sent it back today, and ill try out the new one. post my findings here and i am hoping its just a DOA screen and not the phone itself. thanks for the responses.
White noise
exad said:
Good Luck. I would assume if you asked on here you would expect to hear an answer you didnt expect or you'd have thought of it
But yes, there are 3 screen types from 3 diff makers. So if you bought a different one, you need to sync it or it will appear to be off. Digitizer will still work.
1) Green Flex (Sharp)
2) Green + Yellow Flex (Sony)
3) Yellow (AU)
Click to expand...
Click to collapse
We have synced the old LCD, installed the new and the screen looks like white noise on a TV screen.. We have tested this LCD in a functional unit and works fine.. Is this a board issue?
DevicesNow said:
We have synced the old LCD, installed the new and the screen looks like white noise on a TV screen.. We have tested this LCD in a functional unit and works fine.. Is this a board issue?
Click to expand...
Click to collapse
Sounds like it, but you may want to test another screen with that board just to be safe. I haven't tested extensively the results of mix and matching screens with different boards.
exad said:
Sounds like it, but you may want to test another screen with that board just to be safe. I haven't tested extensively the results of mix and matching screens with different boards.
Click to expand...
Click to collapse
We tested 2 functioning boards and both with same result(Work fine in good unit). I appreciate the fast response!
DevicesNow said:
We tested 2 functioning boards and both with same result(Work fine in good unit). I appreciate the fast response!
Click to expand...
Click to collapse
Then the GPU is most likely at fault which is built into the board. New board needed. As for the fast response. NP, I live here.
Sent from my One X using xda app-developers app
exad said:
Then the GPU is most likely at fault which is built into the board. New board needed. As for the fast response. NP, I live here.
Sent from my One X using xda app-developers app
Click to expand...
Click to collapse
Gotya, thanks.

Dead Nexus: Color Noise Screen

My nexus was working fine, I received a call, answer it, after the call my nexus screen was unresponsive. After that the screen only shows a colored noise.
I thought it was the screen, but I replaced with a broken glass (working) screen a it have the same symptom. The problem seems to be a hardware one, I hard reset it, disconnect everything, replaced the usb board, but it looks is the main board the problem or (2 bad screens?)
Does anyone have seen this?
I attached a pic of the problem.
I would definitely say its a problem are you on stock are you rooted?
Sent from my Nexus 5 using Tapatalk
Pretty sure it's the display ribbon port or cable. I've seen this a few times in the last couple of months.
spinninbsod said:
I would definitely say its a problem are you on stock are you rooted?
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
I'm rooted on android L, but it doesn't seem to be software because as soon as I turn on the phone it shows the noise instead of the Google logo and android animation
Sandman-007 said:
Pretty sure it's the display ribbon port or cable. I've seen this a few times in the last couple of months.
Click to expand...
Click to collapse
What you call the display ribbon? The one that connect to the usb board on the bottom of the battery? Can it be replaced?
2fastkuztoms said:
I'm rooted on android L, but it doesn't seem to be software because as soon as I turn on the phone it shows the noise instead of the Google logo and android animation
What you call the display ribbon? The one that connect to the usb board on the bottom of the battery? Can it be replaced?
Click to expand...
Click to collapse
No the ribbon cable from the motherboard to the LCD. Yes it can be replaced.
Either the screen or flex cable. In extremely rare cases it could even be the motherboard.
Lethargy said:
Either the screen or flex cable. In extremely rare cases it could even be the motherboard.
Click to expand...
Click to collapse
I suspect a bad ground or something related with the cable. When I touch the cable the screen start working. Ordered the flex cable, let see if it fix it, i let you know.
2fastkuztoms said:
I suspect a bad ground or something related with the cable. When I touch the cable the screen start working. Ordered the flex cable, let see if it fix it, i let you know.
Click to expand...
Click to collapse
I've actually seen this happen when a device overheats (I'm looking at you Droid Razr >.>)
Custom Kernels sometimes have this issue as well.
However, if it's constant, a hardware issue is more likely, I'm just giving out a possible idea.
Beauenheim said:
I've actually seen this happen when a device overheats (I'm looking at you Droid Razr >.>)
Custom Kernels sometimes have this issue as well.
However, if it's constant, a hardware issue is more likely, I'm just giving out a possible idea.
Click to expand...
Click to collapse
About 5 or so people have had such issue. None were because of custom kernels (and I don't think overheating either). Either a replacement screen or flex cable fixed it for them. Hardware issue, happens.
Thanks to all.
Todays update:
The flex cable arrived today, installed it, assembled the rest of the phone and bingo! Phone is working fine!!!
Happy again with my nexus, i was almost convinced to jump to the g3 but I really love my red nexus.
I had the same issue reported here: http://forum.xda-developers.com/google-nexus-5/help/hbo-screen-death-t2811070
FlexCable was broken
Cheers
Tom

[Q] nexus 5 colorful dots all over screen... PLEASE HELP!?!?!?

Hello, I am a newbie on this forum.. I have been having issues with my Nexus 5 and was wondering if yall could help me figure out what is going on.
When I turn my Nexus 5 on sometimes the display comes on and sometimes it doesn't. When it does come on, all I get is a screen full of dots. Tiny little dots covering the entire screen. It also doesn't usually go into fastboot mode, but it has twice in what seems like 100 million times trying since this happened. I just replaced the display as it was shattered from a drop, I thought that could be the issue but that didn't help.. So maybe the gpu? I don't know... I'm much more familiar with desktops than phones.. So please help, I'll do anything at this point, even if it takes forever.
Pull it apart again and check all connections.
Sent from my Nexus 5 using XDA Free mobile app
In order from most likely to least likely, as well as cheapest repair to most expensive:
- Flex cable
- Screen
- Motherboard
A lot of people have had such issue and it's mostly been the flex cable.
Lethargy said:
In order from most likely to least likely, as well as cheapest repair to most expensive:
- Flex cable
- Screen
- Motherboard
A lot of people have had such issue and it's mostly been the flex cable.
Click to expand...
Click to collapse
Thank you so much, I hadn't even thought about that. I will get back to you after I order a flex cable. hope you're right. thanks again.
Nothing has changed. I got a new flex cable and the exact same thing is happening. What do I do now?
dvandevelde1 said:
Nothing has changed. I got a new flex cable and the exact same thing is happening. What do I do now?
Click to expand...
Click to collapse
Then its the screen or motherboard. I would just send it in to LG for repair rather than guessing between the two and possibly wasting money.

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