Huawei Y7 2018 Digitiser dead, any solutions? - Huawei Y7 (2017) Questions & Answers

Hello everyone.
Basically what happened is that my friends Y7 fell into water, and as it's not rated by any IP standards it decided to stop working.
At the start backlight was completely gone, but after a day it decided to work.
Currently the only thing that doesn't work is the digitiser, and I'm not sure if I should disassemble the phone to investigate further.
My question is: Is there any way of checking if the digitiser is still alive? Everything except touch recognition works in this phone currently.
Thanks, Mike.

Emdzej55 said:
Hello everyone.
Basically what happened is that my friends Y7 fell into water, and as it's not rated by any IP standards it decided to stop working.
At the start backlight was completely gone, but after a day it decided to work.
Currently the only thing that doesn't work is the digitiser, and I'm not sure if I should disassemble the phone to investigate further.
My question is: Is there any way of checking if the digitiser is still alive? Everything except touch recognition works in this phone currently.
Thanks, Mike.
Click to expand...
Click to collapse
Let it dry some more, you might have fried the digitizer trying to use touch feature while it was still wet. Remove the cover and remove the battery if the cover and battery are removable and let it thoroughly dry for a week. Then see if it will boot and work properly. Have you tried connecting a USB mouse and use it to make selections to see if everything else opens and runs correctly?
Sent from my LGL84VL using Tapatalk

Related

Help - water damaged - touch screen doesn't work

I have searched for similar issues, nothing posted. My phone went swimming with me the other day, DOH!
I have thoroughly dried the unit in rice/dehydration powder (works REALLY well by the way). Unit is completely dry, boots up, recognizes sdcard, radios work etc.
Unfortunately the touch screen doesn't work. I have read that the unit may simply need to be recalibrated. I have carefully disassembled the unit cleaned and checked all leads etc. The unit again reboots, everything works but touch screen.
I am thinking about odin new image to see if it recalibrates screen solves problem, any thoughts advice etc?
Might have to replace the lcd
Sent from my MIUI powered S3 thanks to StrumerJohn and using Tapatalk 4. Respect My Authoritah!
A friend if mine experienced the same problem. And now none of the speakers work nor does Bluetooth. Phone is also going in to safe mode quite often. Is it fixable? I've repaired plenty of iPhones, and did remove the back to try to disconnect and reconnect the flex cables to see if that would work but to no avail.
Sent from my HTC One using xda premium
Did you trip the water sensor? I had a similar issue, did not trip the sensor though. I tried some of the recal methods, not sure off the top of my head but i think you have to hold your finger for a certain amount of time in one of the corner, I am sure someone will know how to do it.
However what I ended up needing to do since the re-cal didnt work. I bought a usb otg adapter to connect a mouse to my phone, followed the steps to return it to stock, odin, unroot, triangle away etc, and sent it back to verizon for a replacement with no problems at all.
Same issue:
Phone was soaking in my gym bag because one of my water bottles leaked. It was in there for a good 10 minutes. I took it out. Dried it and put it in rice asap. 24 hours later I take it out and it boots fine, can connect to my computer move files everything. However, the touch screen will not work. Any tips for self repair? Will leaving it in rice longer fix my issue?

[Q] Digitizer problems

Hi,
I have a question regarding to a digitizer that suddenly started going on the blink, meaning sometimes it doesn't work at all. The screen works normal but it doesn't respond to input. If it doesn't no amount of restarts will help. But if I let the phone turned off for a night, in the morning it will often just work.
I disassembled the phone and checked that the connector was properly connected and it seems to be (I took it out and put it back in). There is no obvious damage on the phone.
I was wondering if there are any known causes for this behaviour. I could just order another digitizer and install that, but since there is no visible damage, I'm a bit worried that it'll just be the same problem. Could it have something to do with the battery? I still have the original and it's not exactly great anymore. I run Shantur's CM11.
Cheers,
Marc
This is prob it
Prob this is it: http://forum.xda-developers.com/showthread.php?t=1239238

[OPO] Touchscreen issue after foam party

Hello,
So maybe you already laughed a little bit by reading the title of the thread.
I had a foam party yesterday and I was stupid enough to have my oneplus one in my pocket. After about 15 minutes I finally realized that it would be a good idea to put my phone away. When I came back home in the night everything was fine but when I woke up today the touchscreen wasn't responding (only physical buttons worked). So I tried to hard reboot the phone and then everything was working again.
But after some minutes of use, I noticed that a part of the screen was reacting strangely. I went in the setting to activate the "cursor route" and I saw that there is kind of a band in the middle of the screen (about 1 cm) where the tactile is not working.
I removed the back cover and noticed that is was a little bit wet inside .. so I put my phone into some rice.
I tried to see how the screen is responding in my recovery (twrp) and the problem is also there, so I'm pretty sure it's an hardware problem.
Do you have any tips or things I can try to do ? I just want to avoid the Oneplus RMA because I don't want to be without phone for 2 months ..
Thanks in advance !
PS : I'm running CM 11S (latest OTA) and I'm rooted.
Stop using the device at all, you're potentially doing more damage every time you use it while it's wet/damp. Leave it in rice for three days without touching it. After three days is up take it out and inspect the touchscreen again.
okey, so I leave it off in the rice. 3 days without phone will be hard
If I have to replace the tactile screen (without LCD), do you know if I have to use thermal tools ?
pocj30 said:
Hello,
So maybe you already laughed a little bit by reading the title of the thread.
I had a foam party yesterday and I was stupid enough to have my oneplus one in my pocket. After about 15 minutes I finally realized that it would be a good idea to put my phone away. When I came back home in the night everything was fine but when I woke up today the touchscreen wasn't responding (only physical buttons worked). So I tried to hard reboot the phone and then everything was working again.
But after some minutes of use, I noticed that a part of the screen was reacting strangely. I went in the setting to activate the "cursor route" and I saw that there is kind of a band in the middle of the screen (about 1 cm) where the tactile is not working.
I removed the back cover and noticed that is was a little bit wet inside .. so I put my phone into some rice.
I tried to see how the screen is responding in my recovery (twrp) and the problem is also there, so I'm pretty sure it's an hardware problem.
Do you have any tips or things I can try to do ? I just want to avoid the Oneplus RMA because I don't want to be without phone for 2 months ..
Thanks in advance !
PS : I'm running CM 11S (latest OTA) and I'm rooted.
Click to expand...
Click to collapse
Lol, so it's a hardware problem that you soaked your phone ? Sounds more like a user problem.... Good luck trying to pass that on a RMA...Well good luck with trying to get a RMA period... lol
pocj30 said:
okey, so I leave it off in the rice. 3 days without phone will be hard
If I have to replace the tactile screen (without LCD), do you know if I have to use thermal tools ?
Click to expand...
Click to collapse
It'll be much longer without your phone if you don't though. And what @Cholerabob is right, what you've done to your phone isn't covered by warranty, warranty doesn't include damage caused by the owner.
Transmitted via Bacon
Cholerabob said:
Lol, so it's a hardware problem that you soaked your phone ? Sounds more like a user problem.... Good luck trying to pass that on a RMA...Well good luck with trying to get a RMA period... lol
Click to expand...
Click to collapse
If you read my post better, you will understand that I said I don't want to pass it on RMA. Of course I know that I will have to pay about 150e because it's my responsibility and it's not covered by any warranty. That's why I want to change the component myself.
And yes, it's an hardware problem because of a user mistake.
Try to make constructive answers next time at least.

Phone COMPLETLY died while i was using it.

As you can see in thread, phone just dead. Dunno what happened. I bought it an year ago. I've tried to connect it to computer and it was visible as QHSUSB bulk but now i can't see it there. It doesn't react for turning on. I can't get into download mode, recovery mode. Very long time ago i flashed Android MM from xda and it was working good. It had ~50% of battery when died. I've tried to put off battery and then connect to pc but still nothing happen. It has broken screen (was working good) but i've done it in September 2016 so. I can connect it to Linux but i think it won't help too. Any fixes? I think they won't take It at warranty because of screen. Phone looks like dead for ages :<. @edit IT'S NOT DEAD! I've disconnected something from battery this longer one and when i click power i can hear "something" in the phone. And it gets heater so looks like processor is working. But it's still not visible in the device manager.
edit2
i know emmc pinouts.
While I was using the phone, with battery at 66%, the exact same thing happened to mine. I'm sick of it. Time for a new phone.
(Had the rooted V15c image on it, no broken screen, only the camera issue - should someone care)
Same problem here, what is happening . My phone was approximately 80-90% and it suddenly turned off and I can't turn it on ..
bump
Phone went black with warning
The same just happened to mine. It was fully charged and I was using it and then the screen went black. There are no lights when I plug it in, no vibration after pressing and holding the power button. Nothing
I've connected it to my pc and a driver installed, I think the same one as a post above (QHSUSB) but still the phone doesn't respond in any way.
It's the European H955 on official MM 6.0.1 no root or mods and is out of the one year warranty yet was in excellent condition. Does this mean the phone is for scrap and nothing can be done?
Hi, I found a solution to repair the phone in this state. I start by telling you a story, a long time ago I had an HP laptop. video card was detachment from motherboard, and to a stick again we used a method called reflowing. I thought that the phone has the same problem, however we have nothing to lose so I opened the phone I took out the motherboard and started to warm up each chip using a hot air blower. I mounted the phone back and now works like new. I apologize for my bad English I am from Romania.
alex_otopeni17 said:
Hi, I found a solution to repair the phone in this state. I start by telling you a story, a long time ago I had an HP laptop. video card was detachment from motherboard, and to a stick again we used a method called reflowing. I thought that the phone has the same problem, however we have nothing to lose so I opened the phone I took out the motherboard and started to warm up each chip using a hot air blower. I mounted the phone back and now works like new. I apologize for my bad English I am from Romania.
Click to expand...
Click to collapse
Any one tried this method and succeeded may please inform on this forum
My phone crashed, would reload to lock screen then restart and finally would not start at all. Before this the rear camera stopped working.
I had reset, flashed a new Rom and replaced the Camera which didn't solve the issue.
After the phone died I tried reflowing though I had no heat gun so I just used the oven. 200c for 7 minutes after disassembly.
That was about 8 hours ago and I am typing on my phone.the Camera is also working.
I will post if it stops again. I did it as the phone was dead and I had nothing to lose.
I have the same problem, and I am interested in getting a heat gun for this purpose. What specific parts of the phone did you reflow/heat? (in terms of the chips, or the entire board.)
Thanks in advance.
xaresys said:
I have the same problem, and I am interested in getting a heat gun for this purpose. What specific parts of the phone did you reflow/heat? (in terms of the chips, or the entire board.)
Thanks in advance.
Click to expand...
Click to collapse
I did not heat the whole motherboard, just the chips under the shields.
Oven Phone Fix?
clb2c4e said:
My phone crashed, would reload to lock screen then restart and finally would not start at all. Before this the rear camera stopped working.
I had reset, flashed a new Rom and replaced the Camera which didn't solve the issue.
After the phone died I tried reflowing though I had no heat gun so I just used the oven. 200c for 7 minutes after disassembly.
That was about 8 hours ago and I am typing on my phone.the Camera is also working.
I will post if it stops again. I did it as the phone was dead and I had nothing to lose.
Click to expand...
Click to collapse
What part of the phone did you reheat exactly? The whole phone? or did you take all the plastic out?
This part here: http://m.ebay.com/itm/OEM-AT-amp-T-LG-G-FLEX-2-H950-REPLACEMENT-32GB-LOGIC-BOARD-MOTHERBOARD-ORIGINAL-/141923410166
Also be sure to take off the rubber part on the back. The purpose is to remelt the solder.l, so only board and nothing else.
To disassemble there are some videos on YouTube. Remove your sim card before taking off the backing
Remember this is a last resort, you could end up with a completely dead chip.
clb2c4e said:
This part here: *link*
Also be sure to take off the rubber part on the back. The purpose is to remelt the solder.l, so only board and nothing else.
To disassemble there are some videos on YouTube. Remove your sim card before taking off the backing
Remember this is a last resort, you could end up with a completely dead chip.
Click to expand...
Click to collapse
Thanks for the information. Is there a specific way you have to remove the shields, or do I use a soldering iron to get it off? (And if so, does it do any good to solder them back on?)
clb2c4e said:
This part here: http://m.ebay.com/itm/OEM-AT-amp-T-LG-G-FLEX-2-H950-REPLACEMENT-32GB-LOGIC-BOARD-MOTHERBOARD-ORIGINAL-/141923410166
Also be sure to take off the rubber part on the back. The purpose is to remelt the solder.l, so only board and nothing else.
To disassemble there are some videos on YouTube. Remove your sim card before taking off the backing
Remember this is a last resort, you could end up with a completely dead chip.
Click to expand...
Click to collapse
Did it 395 degrees Fahrenheit (201.66 Celsius) for 7 minutes, I preheated the oven. The camera and everything now works fine.
xaresys said:
Thanks for the information. Is there a specific way you have to remove the shields, or do I use a soldering iron to get it off? (And if so, does it do any good to solder them back on?)
Click to expand...
Click to collapse
You shouldn't have to use a soldering iron to take anything off. At least not as far as I am aware of.
I should note that as of this morning my phone when blank and will no longer turn on. I will try reflowing at a higher temperature as some solder may need a higher heat but I am not optimistic that this is a permanent fix.
Hey everyone !
First try to connect it in emergency mode to the computer in order to flash with LG UP. If you cannot boot into emergency mode but the device appers on your computer ( and PC is unable to connext into GF2) maybe you could burn your motherboard.
I burn one 7 months ago with my device resting on my pocket so its a common problem for this device (as official support told me so its full covered by guarantee )
Hope you can solve soon !!!

Green and purplish screen?

This is what my son's One Plus 7pro screen looked like one morning. No physical damage just unreadable display. I hooked up a HDMI cable to a monitor and it displays fine so it's not software. Touches are responsive and I have called customer support with no solution. I did a factory reset and it still had the issue so definitely not software related. Didn't use the phone for about three days and now it's working fine. Am I going to have this issue again? Anyone heard of this problem with a purple and greenish display?
Probably something wrong with the LCD or LCD cable
Looks like screen burn-in to me.
CurlyApple said:
Looks like screen burn-in to me.
Click to expand...
Click to collapse
It's less than a month old and the images changes just can't make crap out
jhnsn283 said:
It's less than a month old and the images changes just can't make crap out
Click to expand...
Click to collapse
In that case it's probably a faulty ribbon cable or something similar, can't see much more from what info we have
(Also, do ask if he had left the display on for a long time, maybe overnight, on high brightness. If so, it's a burnt screen.)
jhnsn283 said:
It's less than a month old and the images changes just can't make crap out
Click to expand...
Click to collapse
I think the network has been replaced by a new machine if it is in warranty
jhnsn283 said:
This is what my son's One Plus 7pro screen looked like one morning. No physical damage just unreadable display. I hooked up a HDMI cable to a monitor and it displays fine so it's not software. Touches are responsive and I have called customer support with no solution. I did a factory reset and it still had the issue so definitely not software related. Didn't use the phone for about three days and now it's working fine. Am I going to have this issue again? Anyone heard of this problem with a purple and greenish display?
Click to expand...
Click to collapse
Heya, I have the exact same issue with my One Plus 7t Pro. The screen looks exactly like that and is perfectly responsive (except the fingerprint reader can't recognise my finger) but unusable due to the discolouration. Did you ever discover what the issue was? Did you send it off for repair?
xcalator said:
Heya, I have the exact same issue with my One Plus 7t Pro. The screen looks exactly like that and is perfectly responsive (except the fingerprint reader can't recognise my finger) but unusable due to the discolouration. Did you ever discover what the issue was? Did you send it off for repair?
Click to expand...
Click to collapse
One Plus customer service said they would repair but I couldn't get a ticket created because I bought it through Sprint. Weird loop of going back and forth through both companies. I did a factory reset and the issue didn't fix but twice it fixed itself. The first didn't last too long before the problem came back. The second time it just fixed itself and has been working fine since. My son was sleeping with it at not listening to music and I think it was a heat issue. After factory resetting it and turning it off, I let it sit there for about a day then when I powered it back on, everything was fine. Has been working great ever since. I make sure he doesn't have it on his bed at night anymore. My guess is it's heat or too much pressure on the screen. No way of figuring it out. Not sure if that info will help you or not. I would contact one plus support.
jhnsn283 said:
One Plus customer service said they would repair but I couldn't get a ticket created because I bought it through Sprint. Weird loop of going back and forth through both companies. I did a factory reset and the issue didn't fix but twice it fixed itself. The first didn't last too long before the problem came back. The second time it just fixed itself and has been working fine since. My son was sleeping with it at not listening to music and I think it was a heat issue. After factory resetting it and turning it off, I let it sit there for about a day then when I powered it back on, everything was fine. Has been working great ever since. I make sure he doesn't have it on his bed at night anymore. My guess is it's heat or too much pressure on the screen. No way of figuring it out. Not sure if that info will help you or not. I would contact one plus support.
Click to expand...
Click to collapse
Heya,
Thanks for getting back to me quickly. I also purchased through a third party, so I have contacted them regarding repairs. Did your son mention anything regarding water damage or was this not a concern? I'm feeling a little more confident that it is repairable, cause it looks pretty scary!
I thought about water damage he did have it in the bathroom while taking a hot shower.

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