I have a black screen issue that starts with the screen getting dim, then the next day just a black screen with sound and touch feedback.
Taking the back off and reseating the cables fixes this, but it happens every few months.
Will replacing the screen fix this issue or is there something else going on i need to address?
i'm pretty sure it's not the OS. it happened when i had TW and still happens on LOS.
Do not replace the screen
bajra79 said:
I have a black screen issue that starts with the screen getting dim, then the next day just a black screen with sound and touch feedback.
Taking the back off and reseating the cables fixes this, but it happens every few months.
Will replacing the screen fix this issue or is there something else going on i need to address?
i'm pretty sure it's not the OS. it happened when i had TW and still happens on LOS.
Click to expand...
Click to collapse
Don't replace the screen the problem is the ribbon cables. The best solution is to reseat the cables then place a layer of electrical tape to secure the ribbon cables so they do not move when you drop the tablet (accidentally or just setting it down on a surface).
Mike
Maybe you have an idea about this? Very perplexing. My screen started getting darker in one corner. then it blacked out. I had already read about reseating the ribbon cable, but the really weird thing is on a reboot the screen comes back on. It has done this several times. Last time, I thought it had blacked out for good, but nope, it is still coming back on after a reboot. This has happened after several ROM updates. I am at a loss.
Same Problem
C0BRA01 said:
Maybe you have an idea about this? Very perplexing. My screen started getting darker in one corner. then it blacked out. I had already read about reseating the ribbon cable, but the really weird thing is on a reboot the screen comes back on. It has done this several times. Last time, I thought it had blacked out for good, but nope, it is still coming back on after a reboot. This has happened after several ROM updates. I am at a loss.
Click to expand...
Click to collapse
The root cause of the fading in one corner is the same problem...badly seated ribbon cables. My Note 2014 experienced a faded corner too before the backlight stopped turning on when I woke it up from sleep mode. Fix action was the same...remove the black plastic cover, flip it over and carefully remove and replace the ribbon cables to the display. To prevent future problems carefully use a sticky black electrical tape to help hold the ribbon cables in place. Check the function (push the power button to put the tablet tot sleep then wake it up) before you replace the cover. Good luck!
- Mike
Pictures
Mike_SattyEng said:
The root cause of the fading in one corner is the same problem...badly seated ribbon cables. My Note 2014 experienced a faded corner too before the backlight stopped turning on when I woke it up from sleep mode. Fix action was the same...remove the black plastic cover, flip it over and carefully remove and replace the ribbon cables to the display. To prevent future problems carefully use a sticky black electrical tape to help hold the ribbon cables in place. Check the function (push the power button to put the tablet tot sleep then wake it up) before you replace the cover. Good luck!
- Mike
Click to expand...
Click to collapse
For those that are interested...here are so pics of the ribbon cable reseating process. I had to do this again to my P600 after a hard drop to a wood floor to nights ago and found the back lighting not working correctly.
Symptoms: 1. Darker spot in corner of display on wake up from suspend. 2. Pressing power button to wake up after tablet put its self to sleep after the screen timed out (turned off display) resulted in lighting of only the soft return and menu buttons and the display back light failed to turn on resulting in a black screen.
The fix action:
1. Turn tablet off and remove the pen from its built in holder.
2. With screen facing up, use a plastic key card (hotel room key or reward card) to go all the way around plastic-chrome border of the tablet and unlock the back cover from the display.
3. Flip the tablet over and lay it on a soft cloth. Carefully flip up the black locking tabs of the ribbon cables (these things are delicate and are easily broken unless you use minimal force). Only the cable on the left can be completely removed (see the first pic). The lower end of the right cable is attached to the display. Fold it out of the way. Remove the cables and inspect ends for damage or debris. reseat the cable paying attention to the tiny locking tabs of the cables, then lock them back into place.
4. Pick up the tablet. With the screen facing you rotate it until the USB port is facing to your left. On the upper right side of the table you see three round silverish dots. These are membrane switches. Press the upper switch carefully with your finger nail (you fill the switch move and make contact). If the screen turns on, carefully flip it over and lay the screen on a soft cloth. Carefully put electrical tape on ribbon cable to hold it in place (see pic 2).
5. Flip over the tablet over and press the power button again to turn on the tablet and verify function.
6. Replace the cover of the tablet. Go around the entire tablet edge and gently press the screen into the cover. You should hear the locking tabs snap as they lock back into place.
Recovery if the screen does not light after replacing the ribbon cables.
1. Unlock and remove the ribbon cables again.
2. Remove the five screws holding the battery in place.
3. Carefully lift the battery out of its position and gently lift up on the wires connecting it to the tablet, the connector lifts up from the tablet to separate.
4. Wait 30 seconds and replace the battery and cables. Repeat step 5 and 6 above.:good::good::good:
- Mike
as mike suggest, unless hardware issue, reseating cable fixed my similar issue as well.
make sure to secure those cables with the tape so it doesn't happen again.
This! As Mike recommends above! I replaced a failing battery and the unit worked great, but coincidentally dropped my note the next day. The screen was black and I figured it was dead until I read this, figured nothing to lose and opened it back up. I reset the ribbons, taped them down and I'm back in bussiness. I suppose the drop was just enough to lose or unseat the ribbons. I taped thenm in place and all is good. A million thanks!
Related
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
Hiya,
my Desire HD got wet in the front pocket of my fleece, not drowned just some droplets of water that got inside the Otterbox case and into the phone. I did try and turn it on before I realised it had got wet, it wouldn't power up.
I removed the phone from the Otterbox and dried everything and tried to turn it on again as there was only very slight traces of moisture apparent. There was condensation and a couple of little drops of water inside. I discovered there must have been enough moisture to short out the battery as there was a little residue mark above the contacts on the inside of the casing. I then noticed the liquid indicators had turned red.
I removed the battery cover and dried the phone gently using an electric room heater for hours, I also put the phone in a bag of rice for a couple of days.
I tried to power it up again after a few days in the rice and it wouldn't start up. I measured across the battery contacts with a multi meter and found the battery was open circuit, so I know it must have shorted. Hoping that this was the only damage I bought a new replacement battery. When I fitted the new battery nearly a week later and switched on the phone, everything seemed to be fine but the display seemed to flash, and as I had a Leedroid rom installed I heard R2D2 chirping and could see the device start to boot up as normal on the screen. Then the display went dark and hasn't worked since. I stripped the phone and cleaned a couple of patches of residue, one of which was right in the lcd connector.
Now when I try and start the phone there is no display, the phone vibrates once when I hold in the power button. Approximately 40 or 50 seconds later I can hear R2D2 making his tweeting noises which always happens on boot up. I didn't think it took so long to hear R2D2 but maybe the phone is checking the file system or something now, and I just can't see it.
It may be that I just need a new screen & digitizer to repair the phone, but I can't tell what might be on the display - maybe it's the phone unlock screen asking for my pin number etc. I can't see any image on the screen, that you would normally see when the baclight is faulty, I have tried to view it with a desk lamp, but it's just black. The capacitive buttons at the bottom don't seem to have any effect, perhaps they are not enabled if it's sitting at the password screen, if it is at that screen.
The l.e.d's don't light up at the top when I turn it on or plug in the charger.
I might have also damaged the volume key switch/ribbon slightly.
What would you do with this phone, any advice on how I could proceed ?
Would it be working just with no display, as R2D2 is squeaking(Leedroid rom has this when the device boots and has an animation of a pc booting up with the post screen) ?
No l.e.d's is a bit worrying and it doesn't seem to know when on charge etc. but perhaps they only work once the phone has booted, I can't remember DOH!
I just thought I would ask, as there are a lot of knowledgeable people on here and it might be possible to save my droid.
Grateful for any help or advice
kind regards
Barry
Hey guys, I cracked the screen on my HOX so I replaced the screen with a unit from directfix.com
After double checking all of the flex cables I tried to power the phone on and I am getting nothing from the screen and the vibration motor is constantly buzzing.
The only signs of life is the red LED, the three capacative buttons will light up, and the aforementioned constant vibrating. If i hold the power button to attempt to turn it off the buttons blink several times then it seems to stay on after that.
Has anyone heard of a problem like this before? Its killing me not having my HOX! I had to put my sim card in my old iphone 3gs and I have to say that this sucks really bad.
Are you sure you've connected everything correctly? It sounds like there's something being shorted! I'd recommend you to dissassembly again, an assembly again BUT THIS TIME VERY CAREFUL. Best is if you use a video tutorial if you think you're not experienced enough.
nitrous² said:
Are you sure you've connected everything correctly? It sounds like there's something being shorted! I'd recommend you to dissassembly again, an assembly again BUT THIS TIME VERY CAREFUL. Best is if you use a video tutorial if you think you're not experienced enough.
Click to expand...
Click to collapse
Thank you for the advice. I disassembled the phone and carefully put it back together. I took care to make sure the flex cables for the LCD, vibrator/button strip, antenna, volume buttons and digitizer were all carefully connected.
Now the vibrate function seems to work fine as it just gives me a short pulse when I turn the phone on as it usually does. The screen however, still refuses to turn on. I made extra sure that its flex cable was put in the right way and that it was secured with the jaw bone connector.
This video here www youtube com/watch?v=OIeO0DueMcg&feature=youtu.be at about 6:00 shows that you can test the LCD midway through the assembly process.
I tried exactly that and the LCD would still not turn on. I am just hesitant to return it because I know that the chances of the screen being a complete dud are very slim.
Now when the phone is turned on the three capacitive buttons remain on which I know didn't used to happen.
Swilli89 said:
Thank you for the advice. I disassembled the phone and carefully put it back together. I took care to make sure the flex cables for the LCD, vibrator/button strip, antenna, volume buttons and digitizer were all carefully connected.
Now the vibrate function seems to work fine as it just gives me a short pulse when I turn the phone on as it usually does. The screen however, still refuses to turn on. I made extra sure that its flex cable was put in the right way and that it was secured with the jaw bone connector.
This video here www youtube com/watch?v=OIeO0DueMcg&feature=youtu.be at about 6:00 shows that you can test the LCD midway through the assembly process.
I tried exactly that and the LCD would still not turn on. I am just hesitant to return it because I know that the chances of the screen being a complete dud are very slim.
Now when the phone is turned on the three capactive buttons remain on which I know didn't used to happen.
Click to expand...
Click to collapse
Update: So I was thinking the phone was booting up all the way, but I just saw that my computer won't recognize the phone beyond making a connection sound; I just can't see it in windows. As i said the capacitive lights stay on, but if I fold the power button they blink 15 times exactly and the phone seems to power off. Should I assume the SoC is dead or gamble with a replacement LCD?
Swilli89 said:
Update: So I was thinking the phone was booting up all the way, but I just saw that my computer won't recognize the phone beyond making a connection sound; I just can't see it in windows. As i said the capacitive lights stay on, but if I fold the power button they blink 15 times exactly and the phone seems to power off. Should I assume the SoC is dead or gamble with a replacement LCD?
Click to expand...
Click to collapse
Hi, I'm in the exact same situation you have described above! Did you ever manage to work it out, what was the solution? Any info or help at all would be great, thanks!!
I did replace my lcd+digitizer as well as yous. And I had same problem. But it does work now.
1.open up your phone . Take all parts off, separated.
2. Take battery off.
3.Now connect power button.
4. Connect battery.
5.Switch it on (hold pwbt for 2sec), mobo+battery+power button itself.
6.Now wait 20 sec.
7.Now connect LCD ribbon(bottom one),make sure it's right in, push it in far as you can.
8.Now put it righ on bezel and connect digitizer ribbon.
9.Press pwbt and see does it work. If does put rest of stuff together and be happy.
I can make phototutorial on request.
I did it few times. The battery was touching the LCD ribbon and it comes of very little but screen comes off and I have to start all over again.
So make sure that ribbon it's not getting any pressure from battery.
Let me know does that help.
Sent from my repaired HTC One X
HI guys
My Nexus 7 2013 will not show any display on the LCD. It is almost as if the device is switched off (but it isn't as i can still hear notifications etc).
I've tried restarting a thousand times but the display is just completely black. Do you guys have any ideas?
I took the back off and checked all connections. I'm not entirely sure which connection relates to the LCD display?
Many thanks
Jred10 said:
HI guys
My Nexus 7 2013 will not show any display on the LCD. It is almost as if the device is switched off (but it isn't as i can still hear notifications etc).
I've tried restarting a thousand times but the display is just completely black. Do you guys have any ideas?
I took the back off and checked all connections. I'm not entirely sure which connection relates to the LCD display?
Many thanks
Click to expand...
Click to collapse
The enclosed thumb shows that amber lcd cable. DISCONNECT the battery before doing anything! If you want to reseat it, at the top (in the picture), peel the silver tape covering the connector upwards (be careful to peel it just past the connector and stop where it meets the copper shield), then pry the connector up and reseat. Be careful to match the slot as the pins may get bent. If you do it right, you should hear or feel a click.
The bottom connector is hidden under the bottom pc board, and you have to remove it for access (blue arrow). Follow the instructions from the thread "take apart guide" in the General section. Good luck.
Not really possible to do this if you wanna put the screws where they belong.
However I just noticed that the case can be removed pretty quick and pain free with just a thumbnail and a guitar pick as long a s you prop the top with the pick, and slide the strong thumbnail all along the non vol button side. I was surprised how easily the snaps popped and the side lifted up. After which it was easy to remove the glass and bulk innards of the m8.
...anyways, when I cracked one of my repair jobs open just now I found an entire ribbon from the motherboard not plugged in. The one on the upper left that come from under the motherboard and attaches at the sisterboard
Anyone know which this controls?
This phone was recieved as a "No power up, no charge" purchase.
Hoping for another quick fix here.
When that ribbon was partway plugged the vibrate bobin continuously went, then a satisfying end to oscillating bobin vibration when I got it in place.
So it clearly has plenty of battery. Yet still refused to turn on even after the 2 minute long press of power+vol up which is suggested throughout the world to solve no power up problems. Also tried the 20 sec power hold then short vol up push followed by 10-15 sec power + vol up hold. Nothing.
I had not plugged it at that time.
Both m8 I opened today were previously opened phones and both opened easily. Planning a usb port swap if I can't get this one to work.
Anyone got any other ideas on getting the battery working let me know.
Actually, to correct this, no guitar pick is needed at all now. I can pry all with my strong thumbnail. The thumbnail is only 1.5 mm. The top is the start point, get it up so it doesnt go back in, say 2mm from back case, then the non volume button side, then the vol side sliding both sides from top to bottom in turn, (you should be able to hear each snapping clip pop out, 4 per side, as you slide. Then the phone body will pop out of the case as easily as a samsung.
couple of videos
take apart the m8 with thumbnail (~5 min) https://www.youtube.com/watch?v=OxbLTptmkKo
replace USB Port without removing motherboard or sisterboard (~6 min) https://youtu.be/6mDh1FM_37k