[Q] Screen not working after opening back panel - Samsung Captivate Glide

Hi everyone.
So Ive been having problems with my glide keyboard being loose. everything else was working fine tho. today it completely fell off, only the screen cable/ribbon were holding the two pieces together. so i decided to take apart the back panel and reattach the keyboard. a few screws to take take out and put in. a simple fix right? wrong! after finding the screws to replace the missing ones that caused the keyboard to fall away, and putting everything back in place... THE SCREEN WOULDNT TURN ON! the phone did light up and vibrate but the screen is completely not alive. i took everything apart again and even double checked the screen connection, tried again and lo, the screen still wasnt working...
i dont know what to do....is there a possibility that i damaged the ribbon, or i need to reset something... what could be wrong?
been searching for fixes all day and came up with nothing... any help would be appreciated :fingers-crossed::fingers-crossed:

ribbon
Try to change the ribbon if it's not that expensive. Maybe because of the stress on it, it went bad.

The ribbon cable is around 60$ us, i broke mine trying to replace my ear speaker
Sent from my SGH-I927 using xda app-developers app

Monad_Mind said:
Hi everyone.
So Ive been having problems with my glide keyboard being loose. everything else was working fine tho. today it completely fell off, only the screen cable/ribbon were holding the two pieces together. so i decided to take apart the back panel and reattach the keyboard. a few screws to take take out and put in. a simple fix right? wrong! after finding the screws to replace the missing ones that caused the keyboard to fall away, and putting everything back in place... THE SCREEN WOULDNT TURN ON! the phone did light up and vibrate but the screen is completely not alive. i took everything apart again and even double checked the screen connection, tried again and lo, the screen still wasnt working...
i dont know what to do....is there a possibility that i damaged the ribbon, or i need to reset something... what could be wrong?
been searching for fixes all day and came up with nothing... any help would be appreciated :fingers-crossed::fingers-crossed:
Click to expand...
Click to collapse
What was the result? I have the same issue and replaced both screen and ribbon but the display does not light. Only the lower shortcut lights up (home, search, back etc.).

Related

XDA stuck at Align Screen!

Hi,
I have a problem with XDA - it is stuck at the align screen and keeps looping the cross over the screen forever.
I have reflashed rom a few time, I have disassambled the phone - cleaned the contacts, cleaned the screen, removed the schotch from the lcd 4 connectors. I even tried to glue a big piece of schotch to the screen pull the touchscreen of the lcd a bit...
nothing helps so far!!!
Do I need a new touchscreen? I really would like to fix this one, because it shouldn't be broken - it looks so nice and clean!?!!!!
Please help me!!
I found that pressure applied to the bottom left corner of the touchscreen behind the today screen button will cure touchscreen problems. When dissasembled it would be the area where the 4 leads branch off the touchscreen. I tested by slipping a doubled over piece of paper under that left corner (with the unit fully assembled). It put just enough pressure on that area that the touchscreen started working again! Try it, might work.
Thanks, but nope - stucking a paper under the casing didn't help.
I have managed to get pass align screen by deleting welcome file on PocketPC/windows/startup, but still the screen is faulty as the bottom and the top part of the screen doesn't respond to stylus!
What could this mean? Is there something wrong with the robon cable? Could reattaching the ribon cable help?!
Guess what! Just fixed the touchscreen - everybody said it's impossible - I don't know how I did it - just removed the ribon cable and soldered it back - it worked for me!!
Thanks all!!
XDA iis digitizer replacement and align screen solved
Ok to start with it is nearly impossible to solder the ribbon from a new digitizer on to a ppc lcd. I screwed up a screen trying to do that with a so called fine soldering iron but this is micro soldering, looks to be only possible by a machine. Dont glue it either as i've heard its bad too but if some one has had success then post and let us know. I just sticky taped it to the 4 metal connection lines. The ribbon is slightly see through and can easily line up.
Now when I had done this the screen align kept cycling. Yes even up to 20 times would not fix it but if you go back to the ribbon connection and make sure it is exactly on mark then you'll know the connection is ok. If the align screen responds to your taps well then it is just either the ppc getting used to the new digitizer or what I found was shuffling around the screws and making sure the insides of the ppc were snug and nothing pressing too hard on the lcd. The comment on placing a piece of cardboard was a good sujestion as when I screwed the whole thing together it suddenly aligned.
When the ppc finished installing, the alignment was a bit off by half a centimeter so i ran the align screen utility from settings again and it aligned! Now it works. Fingers crossed.
No response from a seemingly perfect touchscreen.
Hello guys it seems you guys have mastered correcting touch screen problems. If you would take a moment of time out of your day to help a dumb college kid. I have a SX66 and it has worked perfect and has remained to be a cool phone thanks to this site and the developers. I have retraced my steps a million times and here is what happened. I was surfin the web on my phone at school and the battery dropped off. I put the battery back on but the phone would not power up. 30 minutes later I tried my backup battery and bingo it powered on. But the touchscreen does not work at all. I took the phone apart and made sure connections were good and all was good. And as a last resort I reflashed my copy of wm6 to the phone. There is no cracks or blemishes on the screen. Any ideas will be greatly appreciated

Screen died?

Last night I was out and during the night I pulled my desire z out of my pocket to find that the screen was dead, the soft touch buttons were still lit up and working but no display. I pulled the battery and tried to reboot and no luck, you can hear it booting and even unlock/receive calls and txts etc once it has booted up just the screen stays blank the whole time so have to do everything on feel.
Essentially does this just mean my screen has a hardware fault? is it worth trying to fix? I assume the only option would be to purchase a replacement screen and dissemble and reassemble it?
(warranty is not worth it as I live in New Zealand and would have to send my phone back to the UK where I bought it from, also I have dropped it quite a few times so probably voided anyway...)
Thanks in advance for any input
Does it never display anything? So not even a flash during boot or something?
Because then it is probably a hardware problem.
Since the soft touch buttons do still work I think there might be a little crack or something in the flat cable that connects the bottom half with the top.
Maybe you could check whether you can see if the cable is broken or not?
The best thing to do then is to look for a replacement and try to fix it yourself or bring it to a shop where they can do it for you.
No it never displays anything, completely dead the whole time. The touch input is still working though as I answered a phone call this morning on it by making the usual gesture just without being able to see anything. Doesnt seem to be anything wrong with the cable itself as far as I can see. Yea might have to get someone to have a look at it.
My phone is acting the same. I dropped my phone in the pond before, but pulled battery out on time and had it in rice for a day. My phone was still working for about two weeks after that incident. I dropped it and had one little crack at the top of the screen and about a week after that it died when I had a water balloon fight with the phone in my pocket. D;
Do any of you know if the replacement lcd screen/digitizer for the Desire Z would work for the G2?
I had the same thing happening to my G2 screen, only it was intermittently working for a little while, then just completely died and wouldn't work. It was doing this crazy flickering thing then the back light wouldn't go on at all. If I held the phone at a certain angle in the sun, I could see that the pixels were indeed working on the display, but there was no backlight to make them normally visible.
So I purchased a replacement screen from ebay and carefully followed the directions on a youtube video for a G2 take apart. Its not a hard task to take apart and get down to the screen itself. It was rather easy. After putting it back together the screen still didn't work! Sounds work, i can also receive calls etc. But the screen still doesn't work!
Is there any way that this could be a software issue?
Oh and PS, I believe the LCD replacement would work for both the desire Z and the G2. They are identical phones after all right? I'd say its a safe bet. The screen I bought was only 35 bucks. Didn't think that was a bad deal.
Another dead screen or something else?
Few days ago my phone fell of the couch onto a rug - no big deal, so far it has survived much worse, but when I picked it up, the colors were all messed up - overly green and red. Tried restarting - no luck. Everything worked fine, except the colors, but then the screen turned of completely. I could hear notifications, phonecalls, but the screen was dead. After some tapping on the screen, it turned on again - with ****ed up colors. Then started flickering and was gone again. Few more times I could turn it on by tapping before it was dead for good.
Figured, after all these drops it survived, maybe the screen connector is a bit loose. I mean, I could sometime get a contact when tapping it, so I dissasambled it completely, secured all the connection, put it all back tougether and fired up - same thing: dead screen, phone working.
Has anyone had such problem before? Is it screen that is dead, or connector or... I have no clue... I would like try to fix it on my own, with some replacement parts I could get on ebay - but, what gave?

[pics][fix] Sleep of Death?

I have the p600, bought at Best Buy a few days after launch. Have it rooted using auto root. It has been running perfectly until today. It started taking a few presses of the power button to turn it on after the screen went to sleep, I thought nothing of it and assumed I was just not pressing the button hard enough.
Then a few hours ago, it just stopped turning on again after the screen went to sleep. If I power it off (long press on power button) it will reboot and the display is on again, and it works fine until it goes back to sleep.
After pressing the power button, the menu and back button light up, and If I hold the tablet in a bright light, I can see the images on the screen. So I know the LCD is working, but for some reason the back light won't turn back on after going to sleep. If it were a bad back light, then obviously it wouldn't work again after rebooting.
I tried a factory wipe - same problem
I did an Odin flash with MK1 stock rom - same problem
I suspect a hardware issue, but Ive been reading about this "sleep of death" that can happen with android devices. Fixes range from installing new kernels to replacing the device.
Anyone experience this or know what is going on?
**UPDATE**
A possible fix for this (and it worked for me) is to take the back cover off, disconnect the battery, and plug it back in again.
I have included pictures of what you are looking for.
When taking the back cover off, I was able to do it with just a credit card. Start at the charge port and carefully get between the casing at the cover, move around the outside, popping the outside clips (look at the photo of this). The inner clips will still be holding after you get all the way around, then simply work out the inner clips 1 at a time. It was a little difficult the first time because I wasn't sure how it was attached, but the second time I took it off, it was pretty straight forward.
When putting the cover back on, follow the same procedure. Start at the charge port, get those clips in, then work your way around the outside, careful not to push to hard on the inner part of the tablet, apply your force at the edges. once the edges are clipped in all the way around, simply press in the inner clips (you will feel them snap in)
I can post more pictures for people who want them. I might even make a short video of the procedure, all in all, its pretty straight forward. It's a relatively easy cover to remove.
Battery Connection
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Battery connector removed (you will see, it is just the white part that comes out, use a small screwdriver or pry tool just behind the wires, and lift up, its cliped on the sides)
These are the internal and external clips, you will see that the "hole" looking ones are the internals, they are in there pretty good, take care when prying them out not to damage the cover or clip mount
Interesting.. I just received my p600 today. I had an occurrence similar to this - I hope there isn't some flaw in them we are uncovering... I'll have to wait a week or two before rooting to see if it occurs again.
dzam72 said:
Interesting.. I just received my p600 today. I had an occurrence similar to this - I hope there isn't some flaw in them we are uncovering... I'll have to wait a week or two before rooting to see if it occurs again.
Click to expand...
Click to collapse
ya, good idea on the root. Im not sure how the warranty bit being tripped is going to play out should I need a replacement given that we don't even have custom kernels or rom's yet.
I am going to downgrade the firmware to MJ4 and cross my fingers. Wish there was a faster way to DL these other than slow ass sammobile lol.
Had the same issue on my 10-day old device during a flight back from the US to the UK which was highly inconvenient.
Anyway, what I noticed was that when opening the magnet cover or turning on from sleep, the tablet actually woke up (touch buttons lit up) but the screen backlight wasn't turning on (if I held it at a certain angle, I could see that the screen was showing the home page but just no backlight).
Another side effect of this was that, even after rebooting and having the screen backlight on, the brightness setting was doing nothing.. I could set it to auto or manual brightness and adjust the slider and it stayed the same brightness regardless. As with others, a factory restore had no effect.
In the end, given that I'm kind of boned for the US warranty living in the UK anyway, I just opened it, disconnected the battery connector, reconnected it and started it up. After that, no problem.. brightness and wake-from-sleep started working again no problem.
mproudfoot said:
Had the same issue on my 10-day old device during a flight back from the US to the UK which was highly inconvenient.
Anyway, what I noticed was that when opening the magnet cover or turning on from sleep, the tablet actually woke up (touch buttons lit up) but the screen backlight wasn't turning on (if I held it at a certain angle, I could see that the screen was showing the home page but just no backlight).
Another side effect of this was that, even after rebooting and having the screen backlight on, the brightness setting was doing nothing.. I could set it to auto or manual brightness and adjust the slider and it stayed the same brightness regardless. As with others, a factory restore had no effect.
In the end, given that I'm kind of boned for the US warranty living in the UK anyway, I just opened it, disconnected the battery connector, reconnected it and started it up. After that, no problem.. brightness and wake-from-sleep started working again no problem.
Click to expand...
Click to collapse
I am using the the bookcover also, wonder if the magnetic cover is somehow screwing it up. Im glad you said you opened it up to DC the battery. That was on my list of things to try! too bad there isn't a way to DC the battery with a USB jig. cross some wires or something.. as a EE, one would think I would know a trick that would accomplish that.. lol.
im downgrading firmware and going to do a full nand-erase with bootloader update, and see what happens
*Just noticed that my brightness slider also has no effect. This must be the indicator that the sleep of death has occurred
*Update*
I removed the back cover, unplugged the battery, plugged it back in and it started working normally again. After playing with it for several minutes to ensure it was working (turning it off and on a few times over and over) I put the rear cover back on. But as soon as I had done that, the problem started again.
I removed the cover again.. unplugged the battery.. but this time, after plugging it back in, the problem remained. After a few more unplug/repluging of the battery and it not working, I decided to unplug the LCD, digitizer, and the backlight ribbon cables. I booted the device without these attached, let it boot fully, then powered it down, removed the battery connector, re-attached the ribbon cables then the battery, booted it again, and the screen was back to normal.
Ill keep playing around with this to see if isolate the problem, but it seems like there is something going on with the connectors, or some sensor/detector/controller getting "software stuck". When the screen is turned off, this sensor/detector/controller is either not getting the right information sent to it, or, it is has gotten stuck in some process it can't resolve (happens a lot in hardware engineering). It can happen when something shorts, and sends the device into a shutdown state (watchdog trips). The rear motherboard has A LOT of flex to it, and I had to push kinda hard on the rear cover to re-attach it. I wonder if when the back of the tablet gets pushed in just the right way, in just the right spot, it causes this screen issue to happen.
Either way, this is pretty unacceptable for a $600 device. The good news is that there is no warrant seal on the rear cover.
After use auto root. did you reinstall stock recovery?.
Serinety said:
*Update*
I removed the back cover, unplugged the battery, plugged it back in and it started working normally again. After playing with it for several minutes to ensure it was working (turning it off and on a few times over and over) I put the rear cover back on. But as soon as I had done that, the problem started again.
I removed the cover again.. unplugged the battery.. but this time, after plugging it back in, the problem remained. After a few more unplug/repluging of the battery and it not working, I decided to unplug the LCD, digitizer, and the backlight ribbon cables. I booted the device without these attached, let it boot fully, then powered it down, removed the battery connector, re-attached the ribbon cables then the battery, booted it again, and the screen was back to normal.
Ill keep playing around with this to see if isolate the problem, but it seems like there is something going on with the connectors, or some sensor/detector/controller getting "software stuck". When the screen is turned off, this sensor/detector/controller is either not getting the right information sent to it, or, it is has gotten stuck in some process it can't resolve (happens a lot in hardware engineering). It can happen when something shorts, and sends the device into a shutdown state (watchdog trips). The rear motherboard has A LOT of flex to it, and I had to push kinda hard on the rear cover to re-attach it. I wonder if when the back of the tablet gets pushed in just the right way, in just the right spot, it causes this screen issue to happen.
Either way, this is pretty unacceptable for a $600 device. The good news is that there is no warrant seal on the rear cover.
Click to expand...
Click to collapse
If you open it again, would you mind taking a few pictures of a disassembly process and the way it looks after removing the back cover?
How difficult is it to remove the back cover? Any plastic damage caused?
malutki said:
If you open it again, would you mind taking a few pictures of a disassembly process and the way it looks after removing the back cover?
Click to expand...
Click to collapse
Already took em That was the first thing I thought of when I was taking it apart. I will try to get them posted soon.
Tablet turned on and off like normal yesterday and today. Not a single forced reboot was required. However, while taking notes today, I noticed a dead zone on the right side of the screen. Touch works fine there(with fingers), but the spen won't work. It just jumps over the area. The affected area is a vertical line from top to bottom.
Since I have not been using the spen lately, I can't be sure if it is a symptom of the sleep of death, or a result of removing the ribbon cables and not seating them properly when I reattached them. I'm going reseat the cables and see what happens.
I just got my Note tonight and have this same issue. I got it at Amazon and it came with both seals broken as others have found. Was surprised it seemed to already be on, when I hit the power button the buttons lit up but no screen. Grabbed a flashlight and could see the backlight wasn't turning on. Tried turning it off and back on, or so I thought, but no dice. I figured I had a bad unit and set up the RMA with Amazon.
I then went and stuck it on the charger and held the power button for a long time, and the charging screen popped up. Turned it on, seemed to be working fine until I hit the power button, and then the backlight wouldn't turn back on again until I rebooted it. I took all of the updates and did another factory reset, same issue.
Now, I also bought a smart cover. After taking the updates but before the reset I tried it, it'd shut off the Note but the backlight still wouldn't turn on when I opened it up. HOWEVER, after the factory reset, I opened and closed it a few times and it worked correctly. I then tried the power button a couple of times and it also worked correctly. For the record, my brightness controls DO work correctly.
At this point I'm not sure what to do. I _really_ want this tablet, and Amazon is out of stuck so I can only return it for a refund. I don't want to do that since I got it on sale and it no longer is.
EDIT: Also, I just tried closing my smart cover and hitting the power button with the cover still closed, and the screen DID turn on. So I'm not sure if that partially throws the theory of the magnet going out of whack out the window or not, since it should turn on even if the cover is closed.
locovaca said:
I just got my Note tonight and have this same issue. I got it at Amazon and it came with both seals broken as others have found. Was surprised it seemed to already be on, when I hit the power button the buttons lit up but no screen. Grabbed a flashlight and could see the backlight wasn't turning on. Tried turning it off and back on, or so I thought, but no dice. I figured I had a bad unit and set up the RMA with Amazon.
I then went and stuck it on the charger and held the power button for a long time, and the charging screen popped up. Turned it on, seemed to be working fine until I hit the power button, and then the backlight wouldn't turn back on again until I rebooted it. I took all of the updates and did another factory reset, same issue.
Now, I also bought a smart cover. After taking the updates but before the reset I tried it, it'd shut off the Note but the backlight still wouldn't turn on when I opened it up. HOWEVER, after the factory reset, I opened and closed it a few times and it worked correctly. I then tried the power button a couple of times and it also worked correctly. For the record, my brightness controls DO work correctly.
At this point I'm not sure what to do. I _really_ want this tablet, and Amazon is out of stuck so I can only return it for a refund. I don't want to do that since I got it on sale and it no longer is.
EDIT: Also, I just tried closing my smart cover and hitting the power button with the cover still closed, and the screen DID turn on. So I'm not sure if that partially throws the theory of the magnet going out of whack out the window or not, since it should turn on even if the cover is closed.
Click to expand...
Click to collapse
I just checked Amazon and they have them in stock. Do you think maybe because so many people are getting replacements over and over they are just recycling them and selling them as "new?" Do you have the link to where people are reporting getting them with both seals broken? Thanks.
notebooko said:
I just checked Amazon and they have them in stock. Do you think maybe because so many people are getting replacements over and over they are just recycling them and selling them as "new?" Do you have the link to where people are reporting getting them with both seals broken? Thanks.
Click to expand...
Click to collapse
Amazon itself doesn't have the 32gb black in stock, only 3rd party vendors.
http://www.amazon.com/Samsung-Galaxy-Note-Edition-Black/dp/B00F3SOHNU
The most recent opened seal thread is here: http://forum.xda-developers.com/showthread.php?t=2533073
Here's an older one: http://forum.xda-developers.com/showthread.php?t=2483916
Hi Serinety:
Thanks for the diassembly picture. I believe you are the first one to show the inside!
If possible, do you mind showing pictures a bit more inside? For instance, I'd like to see where the WiFi and LTE connectors are. (They are both different connectors btw)
Many thanks.
Serinety said:
I have the p600, bought at Best Buy a few days after launch. Have it rooted using auto root. It has been running perfectly until today. It started taking a few presses of the power button to turn it on after the screen went to sleep, I thought nothing of it and assumed I was just not pressing the button hard enough.
Then a few hours ago, it just stopped turning on again after the screen went to sleep. If I power it off (long press on power button) it will reboot and the display is on again, and it works fine until it goes back to sleep.
After pressing the power button, the menu and back button light up, and If I hold the tablet in a bright light, I can see the images on the screen. So I know the LCD is working, but for some reason the back light won't turn back on after going to sleep. If it were a bad back light, then obviously it wouldn't work again after rebooting.
I tried a factory wipe - same problem
I did an Odin flash with MK1 stock rom - same problem
I suspect a hardware issue, but Ive been reading about this "sleep of death" that can happen with android devices. Fixes range from installing new kernels to replacing the device.
Anyone experience this or know what is going on?
**UPDATE**
A possible fix for this (and it worked for me) is to take the back cover off, disconnect the battery, and plug it back in again.
I have included pictures of what you are looking for.
When taking the back cover off, I was able to do it with just a credit card. Start at the charge port and carefully get between the casing at the cover, move around the outside, popping the outside clips (look at the photo of this). The inner clips will still be holding after you get all the way around, then simply work out the inner clips 1 at a time. It was a little difficult the first time because I wasn't sure how it was attached, but the second time I took it off, it was pretty straight forward.
When putting the cover back on, follow the same procedure. Start at the charge port, get those clips in, then work your way around the outside, careful not to push to hard on the inner part of the tablet, apply your force at the edges. once the edges are clipped in all the way around, simply press in the inner clips (you will feel them snap in)
I can post more pictures for people who want them. I might even make a short video of the procedure, all in all, its pretty straight forward. It's a relatively easy cover to remove.
Battery Connection
Battery connector removed (you will see, it is just the white part that comes out, use a small screwdriver or pry tool just behind the wires, and lift up, its cliped on the sides)
These are the internal and external clips, you will see that the "hole" looking ones are the internals, they are in there pretty good, take care when prying them out not to damage the cover or clip mount
Click to expand...
Click to collapse
locovaca said:
I just got my Note tonight and have this same issue. I got it at Amazon and it came with both seals broken as others have found. Was surprised it seemed to already be on, when I hit the power button the buttons lit up but no screen. Grabbed a flashlight and could see the backlight wasn't turning on. Tried turning it off and back on, or so I thought, but no dice. I figured I had a bad unit and set up the RMA with Amazon.
I then went and stuck it on the charger and held the power button for a long time, and the charging screen popped up. Turned it on, seemed to be working fine until I hit the power button, and then the backlight wouldn't turn back on again until I rebooted it. I took all of the updates and did another factory reset, same issue.
Now, I also bought a smart cover. After taking the updates but before the reset I tried it, it'd shut off the Note but the backlight still wouldn't turn on when I opened it up. HOWEVER, after the factory reset, I opened and closed it a few times and it worked correctly. I then tried the power button a couple of times and it also worked correctly. For the record, my brightness controls DO work correctly.
At this point I'm not sure what to do. I _really_ want this tablet, and Amazon is out of stuck so I can only return it for a refund. I don't want to do that since I got it on sale and it no longer is.
EDIT: Also, I just tried closing my smart cover and hitting the power button with the cover still closed, and the screen DID turn on. So I'm not sure if that partially throws the theory of the magnet going out of whack out the window or not, since it should turn on even if the cover is closed.
Click to expand...
Click to collapse
I got mine from BH Photo. It works perfectly and all seals were intact when I opened it.
Thanks, can you help me?
i just drop my p600, all the digitizer is broken now, but its still working, i dont want to tear down it, because it can stop working, so, can you please tell me if the digitizer is atached (glue and heat) to the screen, or is it just a plastic holder as its predecessor note 10.1?...
thanks buddyes, sorry about my english it is not my main lenguage u_u, im trying my best.
Just repaired my daughter 's note 10.1 2014 further hard fall thanks to your battery advice!
Thank you, it works fine
Envoyé depuis mon GT-I9505 avec Tapatalk
Just someone post the images of rear back of Note 10.1 (2014) for both P601 and P600 to see the diff when Disassemble the P601 and P600 for replacement purpose?
(mine is P601 and i think i need replace SIM card holder-it's broken since few times take it in-out).
This thread freaks me out. I hope this doesn't start happening to me/everyone.
Sent from my Nexus 5 using Tapatalk
Taking into account the shock of impact, it is normal to my opinion to have strange behaviour of the device...
Would be better to have full time access to battery in order to make hard reset ... or to have dedicated button for this purpose.
Envoyé de mon SM-P600 en utilisant Tapatalk

[SOLVED] Black Screen Issue

Hi. I am not sure this is the BSOD problem that others have had.
I bought a second hand i747. It came with 4.3. It will work fine for a few minutes when first turned on, then the screen will go dark. The menu and back buttons stay lit, and the touchscreen still works, the LCD just cuts off.
If I hit the power button, it sleeps the phone. When I hit again, the screen will come on, but only for about 5 seconds, then it's black again. Everything works, just black screen.
Is it possible for it to overheat or something? It doesn't feel hot at all, but if I turn it off and leave it for awhile, it will again work for about 2-3 minutes, then only about 5 seconds at a time again.
I swapped batteries, and it's the same. The battery had pink on it. I opened it up, and none of the other stickers showed water exposure, and the board itself was clean.
It has stock 4.3, and is not rooted.
I did go to phone settings and turned off the "darken screen during calls" checkbox.
I am wondering if the proximity sensor heats up and shuts the screen off. Grasping at straws I suppose.
Any idea of how to fix this?
Thanks
Perhaps a bad capacitor in the digitizer/lcd assembly? My TV had an issue with a bad capacitor that would cause the screen to blank out after a few minutes???
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
I'll try swapping boards in it later, and maybe at least narrow down if it's the board or the screen assembly. I have an extra proximity sensor I could swap, but it doesn't seem like it's that to me.
thanks, will post more after the board swap
Update: I switched boards (different carriers), and I could not replicate the problem in either phone. I had hoped that would show that either the board or the LCD assembly was bad, but I didn't learn anything useful either way.
I put the boards back in their respective bodies. It still happens now, but not as often. It also appears to be totally random. I did switch batteries in the problem phone, and it doesn't seem as bad. I will try another battery switch and see if that helps it more.
When the screen goes dark, the menu and back buttons are lit. When it went out last night, I could see that there was still some faint background light that I can't see in the day. I pulled up Youtube and did a video, and when the screen went dark, I could still see movement, but couldn't make anything out. So, the phone is still going in the background.
If I push the power button, it sleeps, then push it again, and it wakes up just fine. Sometimes I have to do that 4 or 5 times for the screen to stay on. Sometimes it goes dark after 10 minutes of use, sometimes a half hour, sometimes just a few.
Any help is appreciated.
Well, right before throwing the phone into the wall, I noticed a partially removed liquid exposure indicator. I pulled the phone apart to check the motherboard.
In the process of taking it apart, I forgot to take out the SD card. In so doing, it pulled the sim/sd card module off the motherboard. Low and behold, there was a very light corrosive glaze in a few spots under the module.
So, I got out the 99% IPA, and a toothbrush, and cleaned the whole entire board. Since then, it seems to be working fine.
I don't know exactly what part getting cleaned fixed it, because I just cleaned the whole board.
Anyways, maybe that'll help someone with inexplicable issues downstream.
Thanks for following up with how you fixed the problem. In retrospect, water damage makes sense.
I dropped a Captivate into an ice chest full of melted water last year. I immediately pulled it out and the phone was mostly okay for a while but then the microphone didn't seem to work so well and occasionally the right third of the screen wouldn't respond to touch until I cycled the screen on and off. The water damage sticker and phone interior showed no signs of water.
I will probably sell the old captivate but with full diclosure about the history. Would have been nice if the seller had done the same for you.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Thanks, I should have thought of it sooner, but it didn't seem to have any signs of water damage otherwise.
I ordered the 99% IPA online, because I couldn't find any locally. It works wonders with previously wet boards. You might be able to bring it back.

[Q] Part of the screen is not responding to touch... help?

So during my holiday my HOX got splashed with a bit of water from a wave. The battery was running on fumes and, when I looked at it, the phone was dead. It did turned on later while in my pocket and I happened to press the power button.
I let it dry on rice and nothing. I made the potential mistake of trying to charge it so it would heat up and it wouldn't charge. I then bought another mobile and, just to try it, I took opened the HOX and hoovered. Nothing.
Miracle happened yesterday when, just for kicks, I tried the charger again. It power up!! Everything seems fine, no visible screen damage, wifi works, everything works just fine but... screen won't respond to touch on the very bottom, say, the capacitive and menu buttons (the ones just above the capacitive ones).
What do you guys think? Is the screen dead there, maybe I didn't put the screen back properly or should I wait as some moister might yet be there?
Cheers!
Kutusov said:
So during my holiday my HOX got splashed with a bit of water from a wave. The battery was running on fumes and, when I looked at it, the phone was dead. It did turned on later while in my pocket and I happened to press the power button.
I let it dry on rice and nothing. I made the potential mistake of trying to charge it so it would heat up and it wouldn't charge. I then bought another mobile and, just to try it, I took opened the HOX and hoovered. Nothing.
Miracle happened yesterday when, just for kicks, I tried the charger again. It power up!! Everything seems fine, no visible screen damage, wifi works, everything works just fine but... screen won't respond to touch on the very bottom, say, the capacitive and menu buttons (the ones just above the capacitive ones).
What do you guys think? Is the screen dead there, maybe I didn't put the screen back properly or should I wait as some moister might yet be there?
Cheers!
Click to expand...
Click to collapse
This is a flashback to me. Same thing happened to me few weeks ago - first 3 bottom buttons stoped working, and now 7 days ago part of touch screen is not working anymore. I am going to replace lcd+digitizer+frame, lucky me nothing else need to be fixed. And IMHO trying to heat closed HTC when water was in it doesn't make a sense as a water will condense (as it is closed) so it would make more damage. Oxidation sucks :/
I do have the SIM slot opened but yeah, that's a tinny opening, not much space for water vapour to escape... it's been a few weeks since I thought it had died though, it's pretty amazing to me that it came back at all. Some tough phones, these...
Anyway, I think I'll try to take the screen out again, I wasn't too careful putting it back in because I saw it wasn't charging or powering up or anything at all.

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