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Hello,
I just got my N7 back from repair where they replaced the ME571K SUB_BD./AS board since the USB Port was not working anymore.
Luckily the port works now, but on the other hand the Touchscreen is not responding at all.
I tried restarting already without success. I also cannot reset the tablet since I got TeamWinRecovery Touch (and CWM 10.2) installed.
I can connect the tablet in bootloader and with "fastboot devices" it shows up as 077a744a.
Could anyone help me on how to flash or reset the tablet?
Ps.: This replacement was out of warranty, therefore I paid for it. The service center suggested replacing the mainboard (to make money) as well. Before I sent the tablet in everything was working just fine except mentioned USB Port.
Natschlaus said:
Hello,
I just got my N7 back from repair where they replaced the ME571K SUB_BD./AS board since the USB Port was not working anymore.
Luckily the port works now, but on the other hand the Touchscreen is not responding at all.
I tried restarting already without success. I also cannot reset the tablet since I got TeamWinRecovery Touch (and CWM 10.2) installed.
I can connect the tablet in bootloader and with "fastboot devices" it shows up as 077a744a.
Could anyone help me on how to flash or reset the tablet?
Ps.: This replacement was out of warranty, therefore I paid for it. The service center suggested replacing the mainboard (to make money) as well. Before I sent the tablet in everything was working just fine except mentioned USB Port.
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Try flashing the JSS15R factory image.
http://forum.xda-developers.com/showthread.php?p=45671279#post45671279
I just flashed (with wipe) the factory image without success.
There's no response at all. Also when I try to get into recovery mode now the opened Android with the red exclamation mark shows up.
Is there a low level touchscreen calibration or something I could run through fastboot?
Anymore help would be greatly appreciated.
I'm starting to think they just put my motherboard in another tablet with abroken display...
I'd return it, it sounds like total screen failure.
Natschlaus said:
I just flashed (with wipe) the factory image without success.
There's no response at all. Also when I try to get into recovery mode now the opened Android with the red exclamation mark shows up.
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That fallen android is just an image overlaid over the stock recovery menu. It just means you've booted into stock recovery. You can get the recovery menu by press/hold Power, press/release VolUp, release Power.
Natschlaus said:
Is there a low level touchscreen calibration or something I could run through fastboot?
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There are various different touchscreen software you can load via fastboot and there is a calibration file in /system/usr/idc, but it isn't clear any of these would help if your screen doesn't work at all.
You can try changing the touchscreen software, worse case, it stays the same:
http://forum.xda-developers.com/showthread.php?t=2428133
Alternatively, you can open up your tablet and check to see if the flex cable for the touchscreen has become dislodged. There are 2 cables that run across the center battery. The one that is reinforced using tape is the one for the touchscreen.
Just did a reset but it didn't work.
I already tried these different firmwares from your link but it didn't make a difference.
I guess the screen is just broken. Or is it possible that the new Subboard is not working with the motherboard and therefore the screen fails?
I opened the back but it looks fine doesn't it? Is the big cable the on for the touchscreen or the orange one?
Natschlaus said:
I opened the back but it looks fine doesn't it? Is the big cable the on for the touchscreen or the orange one?
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Yes, that is the cable. You can carefully removing the tape reinforcing the motherboard side of the orange cable and seeing if there is anything preventing a good connection, possibly use compressed air to clear out the connection area. The other end of the orange cable also connects to the touchscreen underneath the usb module so you would need to remove some screws to check that connection.
That's about all I can suggest. It didn't sound like a software issue because your screen completely doesn't work.
Yes I will look at the side where I have to open screws since that is the part they changed. Mabybe they didn't connect the screen.
I also wrote the support already.
Thanks for your help, I will report back.
Same problem experienced
Natschlaus said:
Hello,
I just got my N7 back from repair where they replaced the ME571K SUB_BD./AS board since the USB Port was not working anymore.
Luckily the port works now, but on the other hand the Touchscreen is not responding at all.
I tried restarting already without success. I also cannot reset the tablet since I got TeamWinRecovery Touch (and CWM 10.2) installed.
I can connect the tablet in bootloader and with "fastboot devices" it shows up as 077a744a.
Could anyone help me on how to flash or reset the tablet?
Ps.: This replacement was out of warranty, therefore I paid for it. The service center suggested replacing the mainboard (to make money) as well. Before I sent the tablet in everything was working just fine except mentioned USB Port.
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Click to collapse
Hi there
I have also experienced a very similar problem. The charging port on my 2013 Nexus failed to work, I then ordered a replacement part and changed it. It is very straight forward and simple to do for a novice like me.
on replacing the pcb the charging resumed faultlessly but the touchscreen has become unresponsive, i then replaced the old pcb and the screen has resumed functionality, but charging is not working.
The part was replaced by the supplier and it has occurred again, charges fine but the screen is unresponsive. Again i reinstall the old part and hey presto screen is ok.
I am now going to try and replace the actual usb pin itself from the original failed board and see if i can repair myself.
I had also done all the resets and reboots mentioned online.
Not sure if this helps but thought i'd share as its relevant
Many thanks
Is this the n7 2013? If it is how the hell did you get the back off? I tried and was afraid of breaking something.
Sent from my Nexus 7 using xda app-developers app
It's really easy. No tools required. Run your fingernail around the perimeter of the tablet edge between the screen edge and angled plastic. You'll hear the clips releasing as you go. Then carefully work the back off. No glue, just clips. Takes about 1 minute.
Sent from my Nexus 7 using XDA Premium HD app
Any update on how you solved this ?
I would appreciate if anyone could share the solution for unresponsive touch screen, if it's possible at all. The screen only reacts on the edges, and only to the swipe gestures, not to tapping. But all and all is the same - broken USB, replacement part, unresponsive screen.
no_cannabis said:
I would appreciate if anyone could share the solution for unresponsive touch screen, if it's possible at all. The screen only reacts on the edges, and only to the swipe gestures, not to tapping. But all and all is the same - broken USB, replacement part, unresponsive screen.
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Try this http://forum.xda-developers.com/showthread.php?p=45183659 it made 2 of my tablets usable.
Sent from my DarkKat Nexus 7 using Tapatalk 2
I think this is the same issue: http://forum.xda-developers.com/nex...a/usb-io-pcb-touchscreen-calibration-t2939991
Is there nothing to "calibrate" the screen? Asus is supposed to do it for you.
I think the problem is the rev. number of the usb board.
I found this explicative video on youtube, but I can't put the link. Look for "Nexus 7 2013 2nd gen charge port replacement issue"
I have the opposite problem: I changed lcd and digitizer two times, both times touch screen was completely unresponsive. I wonder if there's a software solution for this. I know usb board have different revisions, but what about digitizers? Are all the same for every nexus 2013 model? In this case I have to think touch screen connectors on usb board are broken somehow...
parcs said:
I think the problem is the rev. number of the usb board.
I found this explicative video on youtube, but I can't put the link. Look for "Nexus 7 2013 2nd gen charge port replacement issue"
I have the opposite problem: I changed lcd and digitizer two times, both times touch screen was completely unresponsive. I wonder if there's a software solution for this. I know usb board have different revisions, but what about digitizers? Are all the same for every nexus 2013 model? In this case I have to think touch screen connectors on usb board are broken somehow...[/QUOTEI
I know this is an old thread, but the problem is replacing a rev 1.3 board with a rev 1.4 board. They are not compatible touch screen wise. I have heard that there is a reset tool that only Asus has that can fix this...
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My kid broke the original screen and I replaced it with a cheaper one that worked great until he broke it again
Got a new screen but the touch doesn't work and I can't enter twrp except if I disconnect one of the daughther board connector ribbons (can't remember which one now).
My guess is that the screen is for a different revision board.
Any way to solve the problem?
This is the perfect thread. I have a collection of Frankenstein parts and the problem I've had with 5 or 5 devices (flo) is the sub board. Some work, some don't. I'll try the firmware links and report back.
Has any one found solution for this problem, even my Nexus 7 2013 touch screen has stopped working after I repaired the micro USB port. Actually my tablet was not charging and I figured out that there was some lose contact in the micro USB solder joints, untill then my touch working. I haven't changed any daughter USB board but just resoldered the micro USB port after which my charging has started working and I can even connect a mouse or pendrive through USB OTG cable but the touch screen has stopped working.
hello, i have problems with g3. Screen is replaced it is working but the backlight is not working. Its very dark but can see something on screen. So maybe someone know there is problem with motherboard or someone have motherboard scheme?
Damaged lg g3 D855 screen backlight
Am having that same problem with my LG g3 D855. Can someone please help. The phone comes on but the screen backlights won't work is there a way for it to be fixed?
Have you made sure that all connections where correct when you changed the screen?
Sent from my phone
ypsmav said:
Have you made sure that all connections where correct when you changed the screen?
Sent from my phone
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All the connections are correct....and the phone comes on just the display backlight not coming on.
The funny thing is that when am in a well lighted room or i shine a light on it, i can see that the phone is on an i can access my apps.
make sure that all 4 ribbons in the lg motherboard is properly connected, check if some pins are dent or bended. if all seems to be good, the problem is the backlight of your replaced screen
Make sure there is nothing covering the proximity sensor!
morloonie said:
make sure that all 4 ribbons in the lg motherboard is properly connected, check if some pins are dent or bended. if all seems to be good, the problem is the backlight of your replaced screen
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where can i find the connection for the backlight?
Hello, did you find a solution.
I have the same issue, it's not the screen because when I change the motherboard, the brightness work.
Thank you.
If I cover the proximity sensor and try to turn the screen on, I'm successful. That's with both power button and fingerprint sensor. It didn't do this on the most recent 7.0, has anyone else had this problem? Androsensor shows the proximity sensor is working.
lightningdude said:
If I cover the proximity sensor and try to turn the screen on, I'm successful. That's with both power button and fingerprint sensor. It didn't do this on the most recent 7.0, has anyone else had this problem? Androsensor shows the proximity sensor is working.
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Do you mean while in a phone call? I'm running NBD90W 7.0 and the proximity sensor doesn't prevent me from turning the display on while not in a call.
Sent from my Nexus 5X using Tapatalk
No, I mean while the phone's not being used. I used to be able to set my phone face down, touch the sensor, then it'd vibrate like it accepted the fingerprint, but the screen would stay off.
Sent from my Nexus 5X using Tapatalk
lightningdude said:
No, I mean while the phone's not being used. I used to be able to set my phone face down, touch the sensor, then it'd vibrate like it accepted the fingerprint, but the screen would stay off.
Sent from my Nexus 5X using Tapatalk
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Interesting because I don't think that was ever supposed to be the case. I've never read that being a feature on the 5X nor Nexus 6P. Are you certain it wasn't just auto brightness? Cuz on mine, with auto brightness enabled, I can reproduce the scenario you are referring to. The phone does look "off" but it's just extremely dim due to the sensor being covered. Happens all the time when I'm in my car since I leave my phone in the cup holder.
Sent from my Nexus 5X using Tapatalk
I just checked my wife's phone, and you're right, her screen comes on. She's on NBD90W. Maybe it was on MM? Anyway, it's super annoying because my screen will turn on in my pocket and the emergency dialer will get hit. Then it's just pushing buttons for over an hour. (While at work, phone in front pocket)
Edit: I just remembered that this is a replacement device, received about a week ago. Maybe the old device was actually glitching in a good way? I just figured it was NPF10C because I've only really noticed it since I installed that version.
Sent from my Nexus 5X using Tapatalk
lightningdude said:
I just checked my wife's phone, and you're right, her screen comes on. She's on NBD90W. Maybe it was on MM? Anyway, it's super annoying because my screen will turn on in my pocket and the emergency dialer will get hit. Then it's just pushing buttons for over an hour. (While at work, phone in front pocket)
Edit: I just remembered that this is a replacement device, received about a week ago. Maybe the old device was actually glitching in a good way? I just figured it was NPF10C because I've only really noticed it since I installed that version.
Sent from my Nexus 5X using Tapatalk
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This sounds like Ambient Display is turned on?
Sent from my Nexus 5X using Tapatalk
No, I've turned ambient display and the similar new motion in the Moves menu.
Sent from my Nexus 5X using Tapatalk
I'm trying the app, Pocket Screen Lock to see if it helps. It could be that my power button keeps getting hit, but I don't know how. I do move around a lot at work, though.
Sent from my Nexus 5X using Tapatalk
lightningdude said:
I'm trying the app, Pocket Screen Lock to see if it helps. It could be that my power button keeps getting hit, but I don't know how. I do move around a lot at work, though.
Sent from my Nexus 5X using Tapatalk
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I'm not sure else it would be. I'm leaning towards the device possibly having a defect. Have you tried going back to 7.0 and resetting it there? I can't try 7.1.1 until it's official so I'm limited in what I can suggest.
Sent from my Nexus 5X using Tapatalk
No, I haven't. At this point, I'm going to stick with the pocket screen lock app, because I'm hoping to avoid wiping the device. Thanks for the help, even though you were mostly just a sounding board. It really did help out.
Sent from my Nexus 5X using Tapatalk
Normally the phone behaves fine but when I use the phone while charging, the touch registered by the screen is often erratic and a lot of time touch is registered at a different part of the screen than the one I am touching. This happens for a split second and then returns to normal for a couple of seconds.
Does anyone else face this problem and is there anything I can do about it?
I am currently on AEX ROM, but this issue was also present in stock ROM.
Sent from my Z2 Plus using Tapatalk
All I know is that I had a similar problem on my playbook tablet when I was using some weird Chinese adaptor for my charger, same as what you describe, it would even register my touch a few milimeters off the screen
Interesting.. I am using the bundled charger, but just in case I will try a different charger and see if things improve. Thanks
Sent from my Z2 Plus using Tapatalk
I have a Pixel C 32gb and the touchscreen was working fine until today. Yesterday i left it charging overnight and today the touchscreen doesnt work anymore. it doesnt even work on TWRP recovery menu.
The warranty ended last January.
What can I do? Is there any way to repair ir?
Wow
i connected a mouse via OTG, the mouse didnt work but the touchscreen came back to life LOL
Same here.
Factory reset doesn't help.
HW issue?
Today I had trouble getting the touchscreen to work after it's been off for some time.
I have to turn on and off the screen a few times to get touch working
I don't know if it's a hardware issue
Now the touschscreen has definitely stopped working.
It seems that there are no replacement parts available in Europe.
Does anyone know the cause of this hardware issue? Maybe I'll try to open the tablet and check the connectors
My Pixel C is officially dead. I opened it up to check the ribbons, nothing out of the ordinary.
When I reassembled the screen ribbon the screen won't turn on anymore.
So I guess I'll wait for the galaxy tab s4.,
Sorry about your Pixel C. Mine is still working. I'll let you know if anything changes.
gtaadicto92 said:
My Pixel C is officially dead. I opened it up to check the ribbons, nothing out of the ordinary.
When I reassembled the screen ribbon the screen won't turn on anymore.
So I guess I'll wait for the galaxy tab s4.,
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Sent from my Pixel 2 XL using Tapatalk