Develop Bugs

Touch screen not working on HTC TP2

So the touchscreen no longer works on my phone. So that pretty much means i can't unlock my phone, which means i can't shut it down, which means it's useless.
During startup, i got the very generic services.exe error, which leads me to believe that since there was an error with the exe, the service used to poll the touchscreen isn't running.
So before you ask:
- I have power cycled the phone several times (still same result of nothing
working)
- Windows Mobile upgraded to Verizon's release of WM 6.5
- I have not installed any new software in over a month
- It has never gotten water on it
- I have hacked the registry, about 6 months ago when i got the phone
- I did mess up one of the registry keys, replaced the key name with a
't' and couldn't remember what it originally was, but the phone hasn't
acted up. Can't remember what the location of key is either, but i
was trying to remove the vibration whenever you touched the
screen. There are two locations for it, and i eventually found the
proper one though.
So if anyone has any ideas short of hard-resetting the phone, please let me know. Is there any sw that can run my phone via the computer?
Thanks

Touch screen not working
I have to got the same issue, ever tryed hard rest.
flashed new rom. still nothing...

Solution
Okay, I've just had this problem with an HTC Touch, and I think this works with any HTC that has a "digitizer" rather than an all-in-one touchscreen (I think newer phones have digitisers).
I'm not sure if this will always work, but I've just done it - sometimes the inactive touch screen is "broken" because the layers are stuck together (so the phone can't tell where the touch is, hence unresponsive). With mine, I looked at the screen side on and could see a kind of "oily" patch in the light.
The solution is to get masking/gaffa tape - the very sticky brown one. Stick it down on the screen/digitizer and then keep pulling it off - this pulls the layers from each other. I kept repeating this lots before it worked - and in the end I pulled the top layer completely off (I think you should pull from the top of the phone, as the layers need to be attached at the bottom of the screen/digitizer). Once it pulled away, I gently lay it back down (after panicking!!) and hey presto it started working again.
Good luck!

I have the same problem, oily stuff migrating from a corner inward....
And you're suggesting we do what now? I'm not following this.....

He suggests you put masking tape onto your screen, to pull the stuck layers apart. If this doesn't work, you can always replace the digitizer.

salterlee said:
Okay, I've just had this problem with an HTC Touch, and I think this works with any HTC that has a "digitizer" rather than an all-in-one touchscreen (I think newer phones have digitisers).
I'm not sure if this will always work, but I've just done it - sometimes the inactive touch screen is "broken" because the layers are stuck together (so the phone can't tell where the touch is, hence unresponsive). With mine, I looked at the screen side on and could see a kind of "oily" patch in the light.
The solution is to get masking/gaffa tape - the very sticky brown one. Stick it down on the screen/digitizer and then keep pulling it off - this pulls the layers from each other. I kept repeating this lots before it worked - and in the end I pulled the top layer completely off (I think you should pull from the top of the phone, as the layers need to be attached at the bottom of the screen/digitizer). Once it pulled away, I gently lay it back down (after panicking!!) and hey presto it started working again.
Good luck!
Click to expand...
Click to collapse
OH...
MY...
F&%$ING...
GOD...
you are a goddamn genius, had to log on just to say THANK YOU, wow. i was about to buy a new phone.

CaptainFantastic said:
OH...
MY...
F&%$ING...
GOD...
you are a goddamn genius, had to log on just to say THANK YOU, wow. i was about to buy a new phone.
Click to expand...
Click to collapse
I've done the same, just to thank you.
had this problem this se xperia x2

Unbelievable...this just worked for me too! I gave up on this phone 6 months ago...now back to flashing ROMS, yeah!
Thanks a lot!

It is now!
Thank You! And I didn't even have the proper tape, just some cheap sellotape...did the trick though!
Thanks again, You Rock Dude!
Very Much Appreciated!
(And a Big Thanks to Andrew for the heads up!)

If I had read this 3 weeks ago i wouldn't have wasted 35$ on a new screen.
It gets worse, the new screen doesn't work. But this 1cent fix DOES.
The new screen was never calibrate-able.

salterlee said:
Okay, I've just had this problem with an HTC Touch, and I think this works with any HTC that has a "digitizer" rather than an all-in-one touchscreen (I think newer phones have digitisers).
I'm not sure if this will always work, but I've just done it - sometimes the inactive touch screen is "broken" because the layers are stuck together (so the phone can't tell where the touch is, hence unresponsive). With mine, I looked at the screen side on and could see a kind of "oily" patch in the light.
The solution is to get masking/gaffa tape - the very sticky brown one. Stick it down on the screen/digitizer and then keep pulling it off - this pulls the layers from each other. I kept repeating this lots before it worked - and in the end I pulled the top layer completely off (I think you should pull from the top of the phone, as the layers need to be attached at the bottom of the screen/digitizer). Once it pulled away, I gently lay it back down (after panicking!!) and hey presto it started working again.
Good luck!
Click to expand...
Click to collapse
I have exactly the same problem! The touchscreen of my xperia mini is not responding at all!
Can you please be more precise? What do you mean "pull off the layer of the screen?" Do I need to disassemble the phone and mess with the hardware? That sounds pretty scary!!!

kostass123 said:
I have exactly the same problem! The touchscreen of my xperia mini is not responding at all!
Can you please be more precise? What do you mean "pull off the layer of the screen?" Do I need to disassemble the phone and mess with the hardware? That sounds pretty scary!!!
Click to expand...
Click to collapse
I think he had some sort of a screen protector that was interfering with the screen...
You can try to run your fingernail along the edge of the screen - between the bezel and the actual touchscreen. Quite often something stuck in there is causing the touchscreen problem (or there is a deeper hardware issue and the touchscreen is just not functional).

146 theserog
I'm in the same boat. Normally I wouldn't be afraid of a little digitizer replacement. But on the TP2 it looks like every single bolt and screw needs to be replaced and in the only video I could find about it, the guy broke the lcd in the process.

Hoolexer
W0W.... You are awsome,,, Now I can sleep at night. Thank You So Much

salterlee you are a genius. I just had this same problem. I putted some masking tape to the screen, didn't had to pull the front layer out, and it worked wonderfully.

A little suction goes a long way!!
Headroom said:
salterlee you are a genius. I just had this same problem. I putted some masking tape to the screen, didn't had to pull the front layer out, and it worked wonderfully.
Click to expand...
Click to collapse
Same thing here.
I used a suction cup from my bathroom mirror that held a razor or something and made sure it was decently moist so once i stuck it to the screen i could slide it up and down the entire surface and worked like a charm..... no tape to throw away.
thanks for the inspiration cause i was gonna make this touch into a throw.

touch screen not working help?

hi ya guys,
i was wondering how do i fix my touch that doesn't seem to working.
Story on how it happened:
i was at Vicroads in melbourne waiting for my friend to have his turn at the counter for his business. I was visiting engadget.com on opera it was all working find i even showed me friend on an article and touch worked fine. After i find it running a bit slow i did a reset(by using the stylist to press the rest button on it.) After that restart the touch screen stop working.
Any suggestion on how to fix it?
Thanks,
Quan

do you have a hard case around the phone? I've read before that sometimes the hard case around it will put pressure on the screen thus already registering a "touch" on the device... thus meaning no other touch will register since its not a multi touch device. Although if you pressed your stylus into the reset button odds are if you had a hard case on there you would have had to take it off and it wouldn't have made sense for you to put it back on before you saw it was working again SOOOoooooo I'll guess that isn't an issue.
ALSO I read somewhere in here, not too long ago... 2 weeks maybe.... that some people had gunk (for lack of a better word) built up around the edge of the screen. With the gunk, dirt whatever built up around the edge it was doing the same thing as the cases where it was causing the screen to already register a screen.
I believe they used their finger nail to run it along the edge and get the stuff out... one person used some sort of knife (I shutter at the idea of taking a knife anywhere near my screen haha) and cleaned it out
'
Just a thought... if that isn't the issue then I'm sure someone else will chime in soon.
Could very well just be a hardware glitch, all be it a very random one

Touch screen has stopped!!!! Help!!!

My phone has been going great and giving no issues. Byt the other evening suddenly the toicuh screen stopped being responsive!!! Totally randomly. No drop or spil or anythign like that, no new software or roms recently.
When you open it the keyboard still lights up, and after a hard reset, you can navigate a bit using the keys. But ZERO response from the screen!!!
As i say, this is even with a hard reset!!! I also tried using masking tip to pressure the screen in case somethign was stuck.
Ok it mighty be the digitiser, or a loose connection. Im hoping not.
Has anyone experienced this or similar and is tehre anythign else i can try before i take the plunge and get someone to look at it??? (its out of warranty unfort)

Ouch
Sorry to hear. It happened to me months back. It started with very uncalibrated clicks... making corner clicking impossible to compensate for.
I've recompensated, but that didn't last long - and it eventually degraded to no touch screen. With insurance, I did get a refurbish for my woes.
I flashed Stock ROM and relocked. No luck.
I'd still back up everything.
Reformat SD card.
Reflash stock ROM
Relock the device - all to see if it helps.
I did have a similar recent problem - but in this case it's because I was using a clip on hard case front that must've been putting pressure on the touch screen.
Hopefully one of these helps you out. Good luck

When my screen stopped responding it was due to a more physical thing.
I read this somewhere and tried it, worked instantly!
You have to get your finger nail under the screen (try pushing your nail into the edge of the screen from the side) and lift the screen up a bit.
This worked for me. If you think its a physical and not software issue give it a shot.

I have had the same problem.
I bought new touch screen on ebay (about $15) and after replacement the device works well.

stop everything !!!!!
if you have Google G Mail set up on your phone remove it and it will fix it's self
somthing google / G mail is doing the tilt 2 doesn't like
causing the "Sleep Of Death"

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????

npahlavan said:
When my screen stopped responding it was due to a more physical thing.
I read this somewhere and tried it, worked instantly!
You have to get your finger nail under the screen (try pushing your nail into the edge of the screen from the side) and lift the screen up a bit.
This worked for me. If you think its a physical and not software issue give it a shot.
Click to expand...
Click to collapse
Woohoo! It worked for me too!
Below is one more post on this topic from another forum:
Originally Posted by p38fln View Post
Well, I finally figured out how this is happening - the digitizer is GLUED on to the phone's plastic case. The glue is like rubber cement, not rigid like super glue. Eventually, the glue lets the screen slide into the center of the phone, until the digitizer actually touches the screen - and then, the digitizer stops working.
It's actually very simple to fix - slide a finger nail under the plastic by the speaker and gently pry the digitizer up. Then, put it back. You dont need to remove it totally from the phone. It will flex back to its flat shape as soon as the glue releases. As soon as you stick it back down, the touch screen will work again.

[Q] Replaced broken screen, thin line on screen unresponsive

Today I finally decided to replace the broken screen on my Nexus 7. Everything went well and according to plan, and when turning on the device I noticed it was working fine. However, upon closer inspection it turned out that one thin line on my screen isn't working. It's preventing me from doing SwiftKey flow, and when I tried drawing in Evernote I could see it was skipping over that part of the screen.
What could be the cause of this? I can't rule out that it's the screen part itself, but could it be more likely that I somehow damaged the LCD flex cable? I tried detaching and reattaching cables, so I have doublechecked that. I guess my question is mostly, how useful is it to try and replace the cable? Thanks in advance!

wi11ow said:
Today I finally decided to replace the broken screen on my Nexus 7. Everything went well and according to plan, and when turning on the device I noticed it was working fine. However, upon closer inspection it turned out that one thin line on my screen isn't working. It's preventing me from doing SwiftKey flow, and when I tried drawing in Evernote I could see it was skipping over that part of the screen.
What could be the cause of this? I can't rule out that it's the screen part itself, but could it be more likely that I somehow damaged the LCD flex cable? I tried detaching and reattaching cables, so I have doublechecked that. I guess my question is mostly, how useful is it to try and replace the cable? Thanks in advance!
Click to expand...
Click to collapse
Did you replace the combo lcd/digitizer, or just the digitizer? In the latter case, you're lucky to have just a thin dead band; usually,1/3 of the screen would be unusable. In the former case, if the bezel is bent, however slightly, or there is some glue residue from the old screen on the bezel that causes the new screen to lie on an uneven surface, it would happen. I've experimented enough times to know the bezel has to be absolutely clean of everything and the surface must be 100% smooth and even. If you used strong tape on the new screen, your best bet is the multi-fix touch, as removing it would in most cases damage it.

graphdarnell said:
Did you replace the combo lcd/digitizer, or just the digitizer? In the latter case, you're lucky to have just a thin dead band; usually,1/3 of the screen would be unusable. In the former case, if the bezel is bent, however slightly, or there is some glue residue from the old screen on the bezel that causes the new screen to lie on an uneven surface, it would happen. I've experimented enough times to know the bezel has to be absolutely clean of everything and the surface must be 100% smooth and even. If you used strong tape on the new screen, your best bet is the multi-fix touch, as removing it would in most cases damage it.
Click to expand...
Click to collapse
I replaced the screen + digitizer. I looked at the bezel (luckily the tape I used wasn't that strong so the screen was still detachable) and I cleaned it up thoroughly. There were indeed some glue residues left. However, it was no use, the screen still fails in the same locations. I had high hopes this might be the cause, but apparently not.
I highly doubt the bezel was bent, because I was very careful with it. I will try out the multi-fix touch option, but I'll do that tomorrow as I'm quite tired now. Thanks for all the suggestions!

wi11ow said:
I replaced the screen + digitizer. I looked at the bezel (luckily the tape I used wasn't that strong so the screen was still detachable) and I cleaned it up thoroughly. There were indeed some glue residues left. However, it was no use, the screen still fails in the same locations. I had high hopes this might be the cause, but apparently not.
I highly doubt the bezel was bent, because I was very careful with it. I will try out the multi-fix touch option, but I'll do that tomorrow as I'm quite tired now. Thanks for all the suggestions!
Click to expand...
Click to collapse
Don't know if you're familiar with the mechanics of the touchscreen, so I'm adding this for the sake of completeness. Lots of people would post problems and when you try to help, would snap back: "I already tried this and that and other things..." So if you already know, forget the rest.
I've found Yet Another Multi-touch Test (YAMTT) of tremendous help in diagnosing. When you switch from one firmware to another, YAMTT allows you to pinpoint exactly where touches do not register. If the dead band remains consistent, it's probably the screen itself. However, touch detection sometimes varies with the speed at which you touch. I've seen touches missing in some areas, which would register on a second or third or fourth pass. So, go slow in those areas, and back and forth to make sure they're really dead. Tedious process indeed, since you have around 30 variants to play with.

graphdarnell said:
Don't know if you're familiar with the mechanics of the touchscreen, so I'm adding this for the sake of completeness. Lots of people would post problems and when you try to help, would snap back: "I already tried this and that and other things..." So if you already know, forget the rest.
I've found Yet Another Multi-touch Test (YAMTT) of tremendous help in diagnosing. When you switch from one firmware to another, YAMTT allows you to pinpoint exactly where touches do not register. If the dead band remains consistent, it's probably the screen itself. However, touch detection sometimes varies with the speed at which you touch. I've seen touches missing in some areas, which would register on a second or third or fourth pass. So, go slow in those areas, and back and forth to make sure they're really dead. Tedious process indeed, since you have around 30 variants to play with.
Click to expand...
Click to collapse
I don't know about the mechanics of the touchscreen, so all of this is helping me
I took a look at that tool, and I posted the result of drawing on imgur: paste "oyIt3bg" after imgur.com (I'm apparently still too 'new' to post links, sorry about that). It is clearly one band, very consistent. I think I should probably talk to the shop I got it from and ask for a replacement. Which sucks, because this particular parts took 3 weeks to even get here. Anyhow, glad I know what the problem is now. Again, thanks for all your help, I appreciate it

Hello fellow dutchie,
I have experienced this problem on my Nexus 4, and after having replaced the LCD+digitizer I also had issues with touch responsiveness in exactly the same areas. As silly as it would sound beforehand, it doesn't seem to be the screen or digitizer. Best... to give up.

Cracked screen

Hello!
Today dropped my phone and screen got covered in spider web. The display itself looks fine, but its covered it spiderweb. The touchscreen doesnt respond at all.
What do i need to do now? I looked at local repair shops, they ask atleast 100 euros. But on ebay i can find lcd display+screen digitizer for 55 euros shipped, or screen digitizer starting from 10 dollars!
Can i buy only screen digitizer (as i understand that top layer of glass thats cracked is screen digitizer?) and replace it? Or changing LCD display along with screen digitizer is a must?

http://www.ebay.com/itm/NOIR-VITRE-...Pièces_de_rechange_outils&hash=item27f98e5d31
So this should fit..right? And are all 3 models LS970, E975 and e973 really same size? Cuz i`ve read people have got smaller screens than original from some sellers on amazon.

Replacing a digitizer is pretty hard and time consuming, that's why people usually replace the whole lcd+digitizer+glass assembly. You will also need adhesive and a heater/appropriate tools. It can be a great learning experience if you don't mind potentially busting your phone. There are no shortage of instructionnal videos on youtube on the subject.
Also, a new G2 is only 190$US .... Just saying ...

noxlord said:
Replacing a digitizer is pretty hard and time consuming, that's why people usually replace the whole lcd+digitizer+glass assembly. You will also need adhesive and a heater/appropriate tools. It can be a great learning experience if you don't mind potentially busting your phone. There are no shortage of instructionnal videos on youtube on the subject.
Also, a new G2 is only 190$US .... Just saying ...
Click to expand...
Click to collapse
As i have two other phones. The g2 mini with Tegra and a razrHD. I'll give a try, thanks for the tip.

Well, i ended up ordering that LCD+Digitzer from ebay. Everything was fine for 2 months, now i have quite large spot that doesnt respond to touches. (See attachment) i already tried disconecting the lcd and digitizer..still same. Is it worth trying to flash another rom? I already flashed stock kdz (had stock before too..)
This happened just today, right after ghost touches went crazy and rondomly oppening everything.
EDIT: That spot is changing sizes..form remains, but it got a bit smaller now. Its truly weird. I put the phone outside for few minutes (its +9C outside) and touchscreen works fine now! What is going on?
EDIT 2: After few minutes of usage, the spot is coming back

WreckLv said:
EDIT: That spot is changing sizes..form remains, but it got a bit smaller now. Its truly weird. I put the phone outside for few minutes (its +9C outside) and touchscreen works fine now! What is going on?
EDIT 2: After few minutes of usage, the spot is coming back
Click to expand...
Click to collapse
I had dropped my LG (more than a couple of times) on its face and it seemed to suffer stroke-like symptoms: one side of the screen was completely dead to touch, and the rest of the screen would occasionally act as though I was touching everywhere which opened programs and messed with the keyboard. I was stubborn and just lived with it and over time, it stopped trying open programs and whatnot. Recently, dropped it again, this time it was a bit more serious. Still no visible damage to the screen, but the "dead spot" moved to the centre of the screen, and again, occasionally tries to open programs and add words to my messages.
At first I thought it all could be related to a software issue. Unfortunately, after installing new ROMS, it never fixed the problem. I bought a digitaliser screen from Ebay as well. I'm waiting on the adhesive tape still so I can't say if this will fix anything. I kind of have a suspicion that its a loose connector (the top middle part of the screen gets super hot only after a couple of minutes of being left on).
I'm just wondering if you have tried taking it apart again to recheck the wiring? I think we may have similar problems (your situation is the first I've come by on the internet that is anywhere close to what's happening to my screen). Thanks so much!