[Q] Dysfunctional Touch Screen - EVO 4G Q&A, Help & Troubleshooting

Recently, my touchscreen has been either registering random presses about 2/3 of the way up the screen, not registering touches at all, or registering double touches wherever I touch. Before I bring this in, any ideas on something to try? I cannot remember anything that would have caused it like drops or water damage.
Note: My phone is rooted, but I have tried different roms and kernels to make sure that wasn't the issue.

menu from the home screen...settings...language and keyboard...touch input...text input...calibration tool.

You can download Dotty from the market, not the game one. That will let you know exactly where the problem area(s) is(are). The right edge of my screen messed with me for some time before finally not working at all. It would cause all sorts of funky keyboard mistypes, repeated letters and such. Sent it to HTC last thursday, they replaced the screen and I should have it back by the 20th. Covered by warranty so no charge too! I believe my digitizer went bad?
Could also just be a widget causing the problem as I've heard they can somehow screw with the touch input. Faulty digitzers don't seem to be too common...

I should have mentioned that I did the screen calibration, but thanks for that tip. Well I used Dotty and Screen Test and they both confirmed the issue, so I sent it in. Thanks for the help.

Related

Rhodium Touch Screen Unresponsive

Hi All,
I have the CDMA version of the Rhodium and happen to be in Europe right now. After a few calls to Verizon I have been using voice and data successfully for the past few days.
Last night after dinner however, I realized my phone appeared frozen and unresponsive via the touch screen. I powered down the phone using the hangup/power button and powered it back on. Touch screen unresponsive. I Soft-Reset and still same problem. I re-flashed the ROM provided by verizon (Since I couldn't get the send/hangup & power keys to do a hard-reset) and still nothing.
I am fairly certain this was not exposed to any water damage. All keyboard and hard-buttons still remain responsive. Anything I can do to try and resolve this?
BTW: The stickers inside are red--they have been red since probably a week after getting the phone but everything has functioned fine for months -- I blame humidity on the red-sticker part.
Any thoughts here on resolving lack of response from Rhodium Touch Screen?
Thanks in advance.
ardentsilent said:
Hi All,
I have the CDMA version of the Rhodium and happen to be in Europe right now. After a few calls to Verizon I have been using voice and data successfully for the past few days.
Last night after dinner however, I realized my phone appeared frozen and unresponsive via the touch screen. I powered down the phone using the hangup/power button and powered it back on. Touch screen unresponsive. I Soft-Reset and still same problem. I re-flashed the ROM provided by verizon (Since I couldn't get the send/hangup & power keys to do a hard-reset) and still nothing.
I am fairly certain this was not exposed to any water damage. All keyboard and hard-buttons still remain responsive. Anything I can do to try and resolve this?
BTW: The stickers inside are red--they have been red since probably a week after getting the phone but everything has functioned fine for months -- I blame humidity on the red-sticker part.
Any thoughts here on resolving lack of response from Rhodium Touch Screen?
Thanks in advance.
Click to expand...
Click to collapse
Same here .. Did you find anyway to get it working?

[Q] Touch Screen Problem

Recently I began to notice a problem with my phone. Whenever I have the keyboard slid out the touch screen is almost non-responsive. So over the past few days I've tried observing what the exact problem is and I think it could be the cable/ribbon that connects the touch screen to the keyboard. I'll have to tilt the screen back and forth before it will actually recognize me touching it. And I've noticed when I rub that ribbon it seems to work. There's also a crease in the ribbon where it folds on it when you close it. I believe this is the problem but I'm not sure and I want any advice/tips I can get. If it is the cable can you order a new one and replace it yourself?
Thanks in advance
Any ideas anyone? I cant get it to half work so I can text and stuff but I have to press it hard and it still wont work at times so something somewhere or another is wrong.
Tripp-phpBB said:
Any ideas anyone? I cant get it to half work so I can text and stuff but I have to press it hard and it still wont work at times so something somewhere or another is wrong.
Click to expand...
Click to collapse
Flash the stock ROM and SPL, and do a warranty exchange. This isn't a device you want to open up unless you really know what you're doing and are certain of the issue. If you really want to give it a go, then just buy a non-functioning unit from eBay to use for parts. They can normally be had for less than $40.
Wow, I cant believe that I finally found someone with the same problem as I have.
At first I thought that it was a software issue and I reloaded the software on my device.
The screen responds to presses with the keyboard in, but extended it doesnt respond and only the external keyboard works.
So to type a nice long sms I would have to start it on my display, flick out the keyboard to carry on and then flick it back in before I could press send or anything.
How frustrating.
But I did a test now and flicking the keyboard out and then slowly slowly pushing it back in I can get to a stage where both the external keyboard and screen responds at the same time again.
Definitely a ribbon problem or something.
Only had this phone for a few months now and if it already doing this then I am not feeling too obtimistic about its future.
Well, time to take it in for a warranty repair. I wonder how much greaf I am in for now.
Time to pull out my awesome trusty Artemis out the cuboard.
Tripp-phpBB said:
If it is the cable can you order a new one and replace it yourself?
Click to expand...
Click to collapse
I had a friend that had this problem with his TP2 which I've successfully repaired. First thing if you want to do it yourself, go to youtube and look for the Rhodium disassembly video (this will help you a lot). It is not difficult to change any parts in the phone provided that you proceed with caution and take the necessary precautions.
If you are afraid or have never opened up a phone to fix parts, then I would suggest to send it to HTC - this would be devastating if you managed to break up the motherboard by mistake or any other parts in the process of fixing the flex cable.
Tripp --
Did you ever find resolution to your problem? Recently my phone started having the same problem, which I originally thought was related to messing up the calibration file when I put loaded xdandroid GBX0A.
However, it sounds like my problem is pretty similar to yours -- touchscreen works fine when the keyboard is closed, but when it is open it only registers on the bottom of the screen -- which is actually useful in some sense because I can still hit the soft keys in the messaging app and such, but not so useful if you want to scroll using the touch screen. If I play around with the z-hinge a bit, sometimes it starts working -- which sounds like the same thing that you described.
Sorry, I just seen your post but I never fixed mine as I went ahead and bought another phone (Evo) but I did research the problem quite extensively and the problem I believe lies in the ribbon that connects the two halves of the phone. If I remember correctly the motherboard is in the side with the keyboard and that's why when it's slide out, the touch screen won't respond correctly. You can find the part online and replace it yourself. I've taken mine apart and it's not that hard but as said, you need the right tools and to be very careful.
Hi guys
I have tried all the above
Last resort is i got sprite backyup to work
BUT HOW THE HELL DO YOU HIT "NEXT" OR "OK" FROM THE KEYBOARD AS SCREEN DOESNT WORK????

[Q] Unresponsive screen replacement phone

I recently had to replace my Evo and when I go to replace my phone I see they take it out of a replacement box. I always hated liked the idea of a refurbished phone but I was desperate and hey if it works then what the hell. Its been 2 weeks and I've noticed problems with the screen response and sometimes losing control of it. for example i could be on Facebook and it will just start scrolling up and down rapidly I also have trouble moving from screen to screen having to make a slow full swipe or it wont work this also occurs unlocking the screen.A more common issue is when typing in portrait "i" and "n" don't work and I'm forced to switch to landscape. Although this happens frequently there is no way i can prove this to a Sprint store considering this happens randomly. Could i still ask for a replacement and what are chances i can get a NEW phone? Also is this a problem with the screen or one that can be solved?
Thank you in advance
I noticed times like that, also when I swyped it showed a very jagged line and wouldn't put the correct word down, I found that during those times I had it plugged into the charger, unplugged and it works fine, how to fix? I dunno, is yours caused by the charger too?
I've noticed my lockscreen issue is caused when charging and as for the keyboard no it happens randomly
I'd take it in, and try do perform actions and have it messed up. You can still express your disdain for the replacement.

Right side of screen partly unresponsive to touch

After I replaced the the whole screen assembly, about 2 cm of the screens right side is almost unresponsive to touch.
It always works, if i touch a spot on the screen that works 100% and then immediately after that touch a spot on the rigtht side.
Sometimes it also register a touch if I try like 10 times.
Could this be software? The phone is not rooted og flashed. I have tried to restore to factory defaults. I'm thinking maybe I could get lucky with a different ROM/Kernel?
I'm also wondering if it is a loose connection to the digitizer? But the I think its wierd that it works when I first "Activate" the screen by touching it on another spot first.
I hope someone can come up with some ideas to try before I open it up again, as it is quite hard to get appart, and I'm worried to brake the new screen.
Regards
TJMacGyver
have the same problem, and i dont think its a software problem you can test the touch screen by using htc help app go to : hardware misbehaving / hardware diagnostics / line drawing test you can view it by drawing lines on screen
have you found a solution to the above problem?

my pixel c gone mad

Hi all,
I've recently got this tablet from Google store (and out of stock now).
After installed all things needed, a serious problem has appeared during in use. Its screen unexpectly trembles, pops notification out, runs and closes apps randomly then unable touchscreen at all. These make me crazy even in screen saver, and power button doesn't work sometimes to stop those happenings.
The device hasn't rooted and staying as 'pure' with only afew apps, so I've done erasing system cache partition on recovery mode and factory reset twice to solve this problem.
Nothing happened so far since reset the device but is still unsettling.. and now I just supposed touching screen badly (with sweaty fingers for example) or the screen protect film I affixed since unboxing might cause the problem.
Does anyone faces a problem like this?
Regards,
Allen
If it was greasy fingers my tablet would be completely unusable. Luckily a quick clean sorts any issues that causes.
My first suspicion would be the screen protector, as mine has done similar when there was something touching the screen. Maybe try taking it off and seeing how it goes? You can also turn on show taps in the Developer Options to be able to see what touches the tablet is detecting when it goes mad.
Better than before
The Real Dannilion said:
If it was greasy fingers my tablet would be completely unusable. Luckily a quick clean sorts any issues that causes.
My first suspicion would be the screen protector, as mine has done similar when there was something touching the screen. Maybe try taking it off and seeing how it goes? You can also turn on show taps in the Developer Options to be able to see what touches the tablet is detecting when it goes mad.
Click to expand...
Click to collapse
Thanks for your reply. Now I've used a BT mouse to match with mine and less touch on the screen apparently. Nothing happened so far.
It's not a problem of hardware I supposed and pretty sure that the screen protector interferes a certain touch as you commented. Still my eyes are keeping on what caused the problem.

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