Database Users

Keypad + screen issues (after reassembling)

I took apart my tytn, including the screen part.
After reassembling it, I've had random issues related to the keypad and screen.
By keypad, I mean all the keys on the screen part of the phone (D-pad, call/hangup,soft left/right, Internet Explorer & Email).
They will randomly cease working and randomly restart working (usually after turn on/off the screen with the power button)
The screen will also randomly turn white and come back on only if I turn off the screen and then back on.
Im thinking it has to do with a loose connection somewhere in the screen section of the phone, however, Ive taken it apart 2 more times to check everything out and the problem persists.
I wonder if anyone experienced the same thing and found which specific internal is the issue.

i would like to know too cause my buttons just stopped working. so the talk, end, message, Internet explorer, ect. but the left down up right and center button work.

I have the exact same issue.
All the keys (not keybord keys) randomly stops working. I am so used to it now, that I dont even try to answer the phone with the green key button.
The screen fades to white, sometimes (maybe 1-3 times a day).
The screen is white when awakening from "sleep mode", turning on and off the screen fixes that after a while (50% of the time white screen when from sleep mode).
I have found out that putting a finger nail between the keyboard and the screen, on the right hand side, when in closed position, and then putting the screen back on, gives me a 99% chance of funktional display.
The problem also accurs in the "full keyboard position", But putting the finger nail in the same spot helps.
So I think the problem of the connection is in the keyboard part of the phone, since those slide contact always are on the right hand side, and the display contact shift side.
I would lite to know if any body have a permanent solution for this.
(I have now opend my phone yet, and I have tryed the putting thin plastic between the display and the cover, with minimal success)
thanks for your time

alkizmo said:
I took apart my tytn, including the screen part.
After reassembling it, I've had random issues related to the keypad and screen.
By keypad, I mean all the keys on the screen part of the phone (D-pad, call/hangup,soft left/right, Internet Explorer & Email).
They will randomly cease working and randomly restart working (usually after turn on/off the screen with the power button)
The screen will also randomly turn white and come back on only if I turn off the screen and then back on.
Im thinking it has to do with a loose connection somewhere in the screen section of the phone, however, Ive taken it apart 2 more times to check everything out and the problem persists.
I wonder if anyone experienced the same thing and found which specific internal is the issue.
Click to expand...
Click to collapse
These are the exact symptoms of the "SCREEN FADING INTO WHITE" problem. See this thread for more info: http://forum.xda-developers.com/showthread.php?t=303872
The common causes for this are a bad connection to the D-PAD controller PCB (in the technical manual they mention it should be carefully checked and the really small screews with same torque making a 90 degree with the PCB), a bad controller (that was my case, had to order a new one) or not enough pressure on the square black chip on controller (some people seem to have fixed it by putting a plastic sheet in between the chip and the case, to apply constant pressure).
I suggest you try to re-open your phone and reconnect the D-PAD PCB as carefully as you can, double checking the connection and the screws there.
I did fix my problem, by ordering a new PCB and replacing the old (probably bad) one. It started to happen after I dropped my phone and it's the only thing that worked. Now my phone is as good as new.
Hope this helps!

Similar Issues with screen
I have similar issues;
Anything thats on the foreground gets closed by the 'x' button and if I slide it open the start button gets continually pressed!
Seems to be the top right corner of my TS thats at fault
sometimes it's fine....most of the time its not!
Andy.

I have the same! I have a huge dead spot in the middle of my (Tytn) screen, and if you tap there it actually activates the "ok" in the top right corner. The rest of the screen works ok. Whilst drawing in notes any drawing near the center dead spot results in a streak to the top right hand corner...
Bad screen?
Bad rom?
Bad motherboard?

lepic2019 said:
I have the same! I have a huge dead spot in the middle of my (Tytn) screen, and if you tap there it actually activates the "ok" in the top right corner. The rest of the screen works ok. Whilst drawing in notes any drawing near the center dead spot results in a streak to the top right hand corner...
Bad screen?
Bad rom?
Bad motherboard?
Click to expand...
Click to collapse
You can rule out the ROM and M/board in my view for this specific problem. Your issue is very similar (and I think has the same cause) as those who find programs close randomly when in portrait mode and when they open the keyboard the start menu often pops up untapped.
I think this is just a case of a bit of pressure being put on the screen top right corner. Some folks have tried the business card run around under the bezel fix and had some success others have had to return for replacement/repair.
Some have taken the device apart and removed the gasket around the screen under the bezel, but this is not guaranteed to work.
Others have replaced the screen and for this particular problem it is very rarely successful as the screen is not normally damaged.
If you have a warranty use it - all of the above "fixes" are warranty voiding.
Mike

Hi Mike
It's an interesting problem as when performing a click and drag in Notes (drawing mode) the center section of the screen seems to work normally - a square box can select an area right through the middle of the screen - suggesting that the screen (as you say) is OK. So what is causing the a tap in the middle of the screen to register in the top right hand corner, when we now know that the center of the screen can work and respond in the correct manner. The size of the affected area is about the size of a thumb print EXACTLY in the middle. Personally I would like to believe that performing screen alignment 4 - 5 times a day for the past year has worn out the center dot and that is affecting the surrounding area. The trouble is that this fault has been reported on this site a few times now, and everyone says it's caused by something else! What did I do immediately before this happen I hear you ask? I flashed a new radio rom and was fiddling with a piece of card I have wedged down the RHS side of the screen to try and help stabilise the screen alignment. Since this problem arouse, I have removed the gasket - but that hasn't fixed it. I'm going to try and boot up the phone out of the casing to see what "zero" pressure applied to the screen does.
I'll report back...
Lepic.

lepic2019 said:
Hi Mike
It's an interesting problem as when performing a click and drag in Notes (drawing mode) the center section of the screen seems to work normally - a square box can select an area right through the middle of the screen - suggesting that the screen (as you say) is OK. So what is causing the a tap in the middle of the screen to register in the top right hand corner, when we now know that the center of the screen can work and respond in the correct manner. The size of the affected area is about the size of a thumb print EXACTLY in the middle. Personally I would like to believe that performing screen alignment 4 - 5 times a day for the past year has worn out the center dot and that is affecting the surrounding area. The trouble is that this fault has been reported on this site a few times now, and everyone says it's caused by something else! What did I do immediately before this happen I hear you ask? I flashed a new radio rom and was fiddling with a piece of card I have wedged down the RHS side of the screen to try and help stabilise the screen alignment. Since this problem arouse, I have removed the gasket - but that hasn't fixed it. I'm going to try and boot up the phone out of the casing to see what "zero" pressure applied to the screen does.
I'll report back...
Lepic.
Click to expand...
Click to collapse
It will be interesting to see what results you get. You'll need the old rubber band technique to hold the battery in place while you do it!
Mike

Well it's not due to the case squishing the sides of the screen as I just dismantled my hermes, wired it all up in bits on my desk, powered it up and still the screen has a dead spot in the middle and phantom taps in the top right. Temperature is normal room temp, approx 22deg c today.
I'm not sure the exact mechanisms of how these touch screens work out where you are tapping (resistance, voltage), but it looks like there are 3 separate strips running around the screen. 1 goes straight across the bottom, two goes up the LHS and across the top and 3 goes up the RHS. Therefore there is a gap between strips 2 and 3 in the top RH corner. Coincidence? hmmm It seems to me for it to register a tap in the top RH corner, strips 2 and 3 would register low voltages (or high resistance) and bottom wouldn't register at all. Thus suggesting a fault with the PSU that powers the touchscreen. Taps near the edges work because they are near the edges and therefore the resistance is not too great and can be detected, taps in the middle and worse off because they are far from all the detecting edge strips.
Does anyone think that there might a registry tweak for boasting power to the touchscreen?

Hermes Whie Screen Problem
To fix the "white screen" problem, you have to take your unit apart, and reconnect the ribbon cable.
I have a new 8525 and it started happeneing to me, so I took it apart this week, and reseated the ribbon connector.
Fixed the problem.

Has anyone here read and understood all that is said here:
http://msdn2.microsoft.com/en-US/library/aa919680.aspx

Perhaps someone could compare the touch.dll in Black Majik to WM5 - should be the same right?
How come that HKLM/hardware/devicemap/touch doesn't show the touch.dll driver as drivername? Keyboard has it's driver...microsoft says it should say drivername = touch.dll
Do you all have that in your registry?

*POSSIBLE* fix for Newton Rings

Okay, so lately my screen's becoming more and more out of alignment. I've basically had to use the black frame on the right hand side of the phone to click anything on the right that needed to be clicked.
Then last night my phone froze while rebooting, wouldn't show the boot animation, just the welcomehead image and froze there. Needless to say I thought something's up. Long story short I checked everything that there is to check and ended up having to hard-reset.
While flipping my phone around through all possible dimensions, i noticed the oily looking stain that is the well-known Newtons Rings problem.
I wasn't willing to be without my beloved Blackstone for a warranty repair and was about to jump on eBay to look for a replacement screen and digitizer, when I remembered something that fixed the touch screen in my old Sony Ericsson P900. So here's what I did that has so far fixed my newtons rings and returned the more soft-touch feel of the screen.
WARNING do the following at your own risk!!! I will not be held responsible for you killing your already dead, Newton Ringed screen
* First, be sure you have a screen protector on. I have a feeling that not having the protector on will damage the screen further.
* Grab your trusty $2 Bic cigarette lighter.
* Hold your phone on such an angle that the oily-looking Newtons Rings are visible. The right amount of light, from the right angle will show them up like the dog's proverbials.
* Ignite the lighter and hold it so the flame is lightly touching the area that has the problem.
--You won't see the rings disappear, more like they will start moving--
* Move the ignited lighter until you have moved, or removed, the oily looking problem areas.
EDIT 29-07-2010:
* Try not to hold the lighter too close for too long, otherwise you may end up needing a new screen protector
NOTE: I do NOT guarantee this will work for you, however, in my particular case, the rings appear to have gone, the screen is now once again soft to touch and the alignment seems MUCH better. It has now been approximately 12 hours since I did this, and so far, so good. All problems are still gone, no visible rings, and the screen is still far more responsive, almost like new.

Newton Rings
So did it fix the issue permanently?

Well, it sort of has succeeded. While my screen still has a huge patch of Newtons Rings (approximately an inch and a half long, by about three quarters of an inch across, they came back after about a month or two) the screen is still functioning, the "soft touch" I mentioned in my first post has nearly dicipated, but it still works. Every now and then the screen will act as if it's stuck down towards the bottom of the screen, but simply rubbing it with a cloth and some mild pressure (just like when I clean it) is enough to bring the screen back to working.
At the very least, it has given me time to save up for a new screen. But I won't be replacing it until such time as the next big change pops up in WM6.5 builds and I cook a new ROM. At this point I'll be completely disassmbling the whole phone for a thorough cleaning. While I'm at it I might as well replace the screen and keep the N.R one for a backup.
To put it simply, the screen is still working and I have no need to replace it as yet.
P.S I'm no longer using a screen protector, I don't care if it gets scratched up now, because it will be replaced, but not until it 100% needs it. I will however put a new screen protector on, if I have to do the lighter trick again.

Thanks Swarvey, got newton rings and helped remove the with the lighter, however i will hav to replace the screen protector.

Cool, glad to hear it wasn't just a once-off that it worked.
I never burned/melted my protector by doing it, but you might have different results with the much higher temperature you subjected yours to.
Keep us posted as to how well it works for you.

In fact I know a less dangerous way to eliminate those rings. I was exactly in the same situation with my HTC Touch HD. I just used some Scotch tapes on the screen, pull the screen to me , and with a lot of patience, everything as desapeared.
It works again !!

Satyan said:
Thanks Swarvey, got newton rings and helped remove the with the lighter, however i will hav to replace the screen protector.
Click to expand...
Click to collapse
Satyan, can you be more specific on how to do it....i have tried duct tape method at least 10 times and it has not worked....
1. how far shud i hold the lighter
2. how do i know, if its working - will the oily patch disaapeear as the area is heated
3. Is it confirmed that oily patch is completely gone n doesn;t return within 1-2 days
~

Tattoo: digitizer (touch screen) broken for the 2nd time

Hello there,
I bought my Tattoo in January this year. It went to the service centre once already, because the touch screen did not work anymore. It came back with a new one.
Today it got broken again. The symptoms; it was getting more and more difficult to get a long press, for instance to move an icon or remove a widget from the desktop. After it stopped working, I could see a dot matrix on the screen, and when the screen is off, it looks like there is some oil, diffracting the light, a bit like a rainbow.
Am I the only unlucky Tattoo owner with this kind of recursive issue? Is the life span of a Tattoo digitizer only 4 months?
What about capacitive screens - are they less fragile?
Is there any particular Android phone with a good / strong build and quality reputation?
Cheers,
JPascal.

I have similar problems with the screen. It's hardly usable. I get those rainbow-like spots on the screen, there is a big white mark at the top of the screen that fortunately I can see through when screen is on. Also the screen sometimes thinks I've pressed in places where I haven't, so it's impossible to use until I reboot. There are many other problems, and the only reason why I don't send it back to get fixed is that they keep it for weeks, and I need it.

I live in Taiwan, Taipei, so HTC support / service is not bad here. They can come and pick my cellphone at my office, and I can hope to get it back 3 days after.
I'll ask them if it's a common problem, will update this thread later.
JPascal.

_david_94 said:
I have similar problems with the screen. It's hardly usable. I get those rainbow-like spots on the screen, there is a big white mark at the top of the screen that fortunately I can see through when screen is on. Also the screen sometimes thinks I've pressed in places where I haven't, so it's impossible to use until I reboot. There are many other problems, and the only reason why I don't send it back to get fixed is that they keep it for weeks, and I need it.
Click to expand...
Click to collapse
I had same problems with digitizer.. But I fixed it :] This can happen when the screen is pressed for a longtime in pocket or the phone is dropped. But I fixed it :]
I turned the phone off, removed mask and tried to lift up digitizer little bit on side where was rainbow-like spots. When they gone, I put digitizer down and press on the side that I lifted up. Now everithing works like a charm

Yeh I have one of the rainbow spots..too i wanna know how can it be removed....cause i cant get rid of it.

that oil spot or Newton ring can be easily fixed by removing top mask and inserting sharp object between LCD and digitizer couple millimeters and then pull the digitizer up so it detaches LCD and newton ring disapears, then while you removing sharp object, used to pull digitizer up, press with finger from center outwards to pump out air and place it back firmly .. I`ve successfully fixed two HTC tattoo`s and one HTC HD display with that technique ....

najzlijiji
Nisam najbolje razumeo sta je digitajzer i proces uklanjanja mrlje na ekranu, pa ako mozes odjesni mi na srpskom, poz!!!

http://forum.xda-developers.com/showpost.php?p=4894288&postcount=8

Ghost screen touches

Just got myself a transformer today and it seemed great, however right after about 5 minutes the thing goes nuts like someone is swiping or touching the screen. Mostly just one spot on the left side and it will do it whether I'm holding it or it's sitting by itself. Can't seem to find anything posted about this wondering if thats because it's not common or I'm just not looking for the right stuff? Any help would be great, will likely return it tomorrow anyhow but if there's a fix would be nice.

Yeah, I got this as well while playing Angry Birds (F'd up my scores ! ). I don't know if it will work for you, but I just cleaned the screen really well with a cotton ball and alcohol, dried it, then used a microfiber cloth to clean it up (the ones that come with glasses, screen protectors). It worked for me, i think there was some gunk on the screen and was registering as a touch..

Try a factory reset and if it doesn't work take it back for a new one.

Thanks I can't see it being something on screen but will give it a wipe done here in a minute. Also tried the factory reset seemed to help but still getting in same frequency just not as badly. will see if the cleaning doesn't work I'll take it back and replace it.

This is the biggest annoyance that I have as of recent.
I have particularly oily fingerprints which causes smudges constantly.
I love the sensitivity of the TF, but if there is excessive smudging, the residue will register as a screen input - Wish the sensitivity could be adjusted.
Weird things happen when I need to clean the screen... I.E. I will be using a browser and use a single touch to scroll down, but it will zoom in/out instead; the long press menu will show up in a random spot persistently; -or- the screen will be completely unresponsive.
When this happens - I turn of the screen, clean it, turn the screen back on, and I'm good to go (note: sometimes I cannot even see any smudges where I am having issues).
This happens to me FREQUENTLY when i use the tab outside during humid days. I am thinking a screen protector may help, but still havent gotten one to try it out.

I had this same problem before the touch screen completely stopped responding on me.
For mine it only happened after waking it up from sleep mode though. When I turned Timeout to Never the ghost touching stopped.

Well tried as suggested the cleaning of the screen and all that but it still did it so took it back to the store got lucky and they still had one left, and exchanged it. New one hasn't had any issues at all. Thanks all.

I just took mine out of the box for fun (it was packed up for rma) and when i turned it on the touch screen worked. The ghost touching stopped to. But i still have a strip from top to bottom on the right side of the screen that registers two touches . So ill probably still send it in for a replacement.

Screen becomes unresponsive to touch frequently

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...
Click to collapse
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 !