This is possibly a common thing, but the screen on my dopod has stopped being a touchscreen. Seemed to work sometimes, then stop, then start working again if i left it in the sun for a few minutes to warm up.. Have striped it down to see if it was a loose connector, but everything seems fine. D-pad and all the other front-cover buttons work. Is this more likely to be a screen issue or a ribbon cable issue?
Related
Hi,
I am still trying to resolve an on going screen problem.:-((
When I have my Universal opened up on my desk the volume and phone dialogs and occasionally the anolog/digital clock dialog keep on appearing and disappearing.
Some times it hardly happens at all and other times it is contant, to the point that the touchscreen won't respond to other input.
When in PDA mode I get a similar situation from the same edge of the screen, but this time the scroll bars go mad.
Previous posts here have suggested either grit in the edge of the screen or dirty contacts. I have pulled the screen apart and cleaned all the contacts as well as cleaned the edge of the screen and the case around the 'affected' area.
Since the problem seems to be down to one particular area of the screen - is it more likely to be pressure from the case or a connection issue.
I'm inclined to think it is pressure from the case, but don't know much about how the touch screen matrix works.
Any help with this would be appreciated - at the moment the screen problems are rending the device pretty unusable.
Surely someone here mush have some ideas, this is driving me mad.
Currently running with the back of the screen off and prodding and pocking at connections to see if it makes any difference, but doesn't seem to.
Next stop is to strip down the base to see if there are any issues with the connection of the screen cable on the main board.
The frustrating thing is that the problem seem to appear and disappear - sometimes it if fine and then other times the dialogs are appearing.
When I have the dialogs appearing I try opening and flipping the phone back and forth and sometimes it goes back to normal but more often than not it doesn't.
The first thing that I want to establish is what is likely to be causing the icon area screen to appear as though it is being pressed?
Cheers,
Julian
I'm definitely no hardware expert but my Universal showed a similar behaviour a few days ago and I'm quite sure it has something to do with the case and/or the cable(s) between the screen part and the main body of the device.
In my case, only a small part of the touchscreen (lower left corner) remains working and the speaker on the display side also refused to work anymore. I've applied some pressure on the edges of the display and the speaker "slowly" began to work again... and so the touchscreen did.
Good luck :?
.ox
Is your phone now working properly?
I have had the screen apart, but do major change. Next stop strip the whole thing down.
I'm starting to suspect the cable, but cannot see any obvious problem with it.
Yes, currently my phone works perfectly.
Did you check the connectors "inside" the display part of the phone (e.g. receiver, ...)?
.ox
Hi,
I have opened up the back of the screen and checked the connections of the ribon cable to either side of the screen and also checked the connection of the actual screen to the circuit board.
It would be useful to know a bit more about how the touch screen side of things work bearing in mind that only one corner of the touch screen is being affected.
I'm going to try to strip down the whole phone and check the connections on both ends of the cable between the screen and the main unit to see if that makes any difference.
Well, I have stripped down the phone and cleaned the connections on both ends of the cable between the screen and the main board and at first for a day or so the problem appeared to have gone away, but now it is back.
I am starting to suspect that it is a problem with the actual cable, possibly a loose connection in the wires - the connectors appear OK and problem appears and disappears when the screen is flipped.
I read here that you cannot buy the cables seperately - is this true?
The next option is to take the cable out and either check all the connections and repair it, however it is a random fault so difficult the trace.
The other option I have considered is to bind the cable tightly with PTFE pumbers tape which is thin enough not to cause any problems, the PTFE will bit will help when flipping the screen and binding it might (hopefully) ensure any loose connections don't remain loose.
Any other ideas from here?
Alright, this problem is a bit different than what I have seen. The screen goes to white when the phone is closed, meaning the keyboard is not slid out. I tried the put a plastic piece under the D-pad trick, still a no go. Now whats weird is if you slide the keyboard open, everything works perfectly fine, the screen acts normal, but as soon as I slid the keyboard closed, the screen fades to white. If I slide it open again, it works normally without even having to do a hard reset. This time it seems to be the LCD since I tried it in another phone, and the same problem happened, so is does anyone know what part of the LCD would need to be fixed? Is the solder on the ribbon going from the digitizer to the LCD loose or is it something that I can't fix at all?
OK another thing I've found out is that it only happens with the AT&T WM6, when I have WM5 on the phone, the problem does not occur at all. If I turn the phone on in bootloader mode, the problem is not there at all either....anyone have any idea what it could be?
Tried LCD
LCD is not the issue I have replaced it. Still have white screen...
I'm thinking it might be the flex cable..
Timleary25
This isn't inconsistent with some of the other things I have read on this issue at all. You're saying you haven't read about it occurring in conjunction with sliding the keyboard in/out but others have definitely noted that this causes it to happen for them.
So I would look at fixing it the same way -- troubleshooting the d-pad cable. If you have already tried this, then double-check that what you changed hasn't fallen apart and also make sure you did exactly what others have said to try.
Yesterday I was working on my HTC HD2, flashed WP7 Mango on it, and opened it again to align the plastic keys with the hardware keys undeneath. It didn’t really work out, so I carefully seperated the digitizer from the display to realign theglass abovethe keys. Now The keys work perfectly, but the screen doesn’t react anymore. I have no clue what could’ve went wrong, the digitzer flex cable is still perfect, aswell are the others which connect the screen to the motherboard. Anyone have a clue what could’ve went wrong? I hope it can get fixed easily
I’ll try to hold the ‘end call key’ while using the display. Seems like that will help to entight the connection.
Fix: So I took the Display out again and checked the connection of the digitizer at the back of the screen. It was loose. So i've put it in place and fixed the connection with some extra tape.
So my fingerprint sensor on my OP2 broke and i replaced it with no problems. However, shortly after i noticed that the every so often the phone becomes unresponsive to touch (except the capacitive buttons which remained active). After living with it for a few days its gotten to the point where its unusable and the capactive buttons even present the same problems now but i have noticed that pressing hard on the screen around the fingerprint sensor fixes the issue until i release it again. I have disassembled it many times and i cannot see any fault. Ive checked all connectors, ensured the LCD was properly grounded on the chassis and even tried insulating it from the chassis.
Any ideas?
I've searched a good bit and wasn't able to find any information regarding the exact problem I'm having.
Bought a used G6 for starters
No water damage indicated by the sticker
The phone works great on the home screen and app drawer
I turned on dev mode to show touches
When you're in the camera it will stop responding to touches, you can still take pictures using the side buttons. The screen will become responsive again after a couple minutes. This whole time you can take pictures and the screen is functioning just not responding to touch
This happens also when you're loading web pages, even a Google search the screen will stop responding to touch and then eventually start responding again for a short while till you load another page or start moving around the page too quickly it seems. However again the screen is functioning, video previews are playing, just no response to touch.
Loading a game like Asphalt 8 the phone doesn't respond to touches until a couple minutes after the game has been fully loaded.
Even after a hard reset/factory reset the screen will sometimes be unresponsive upon the initial welcome/setup screen and then it will become responsive and you can go through the whole setup without an issue.
Any insight? Any suggestions? If I can't figure it out I'll just get rid of it but it's in great condition a shame it just doesn't function properly.
Thanks in advance!
Looks like some sort of hardware issue...
But before you start to worry...
This might sound like a stupid question but have you tried cleaning your screen with some cleaning solutions?
Sometimes dust mixed with dried sweat can cause severe touch responsiveness issues even if the screen looks like it's clean.
This is an older thread, but maybe I can help someone.
I replaced a touchscreen on a LG G6 and saw that the touchscreen did not work if the back cover was not mounted correctly and the data transfer between the phone and the fingerprint sensor was interrupted. This may be a common problem for users because the connector is small and the back cover is attached with a double-sided tape nearby this connector. It seems that the touch screen is disabled by the phone software without the back cover.
MaBaGeMiFlo said:
This is an older thread, but maybe I can help someone.
I replaced a touchscreen on a LG G6 and saw that the touchscreen did not work if the back cover was not mounted correctly and the data transfer between the phone and the fingerprint sensor was interrupted. This may be a common problem for users because the connector is small and the back cover is attached with a double-sided tape nearby this connector. It seems that the touch screen is disabled by the phone software without the back cover.
Click to expand...
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Thank you so much for this comment!
My gf phone had problems lagging and becoming insensitive to touch, the problem got worse and worse, almost never responding anymore. Performed a factory reset etc, didn't help.
After reading your comment I tried pushing on the back cover while swiping. Now I'm able to revive the phone after pushing hard on the top and bottom left corners, of the back cover.
Thanks a mille !
Lg g6 has back panel from glass and under it you have contact for fingerprint sensor.Somehow if the back panel is loose it can cause touch fail,and you cant use the device touch function!
--->FIX:
So you will have to turn screen off using back button,and then try to press back glass on left and right side of the camera lens !
Then simultaneously press the power button and try to use the touch .
If it does not work tru again around camera lens and turn off screen each time you press the back glass!
For me it worked !