Dust under the touch screen - solution!!!

pedroo

Senior Member
Aug 1, 2008
81
1
0
Hi to all who have dust between the touch screen digitizer and LCD.
I send my device 3 times to the authorised HTC service center because of this problem, they cleaned it (not perfectly) and the dust was back again after few days of use. This was really ennoying for me... :mad:
After several disassemblies, cleaning, research where dust comes in, then assembles I found the flaw.

The dust doesn’t come in via sealing foam between the touch screen digitizer and LCD.
There is a bump defect of phone housing around the volume keys. Inside of the plastic housing is a metal frame, where the touch screen digitizer is stacked on - that frame is a little bended and the touch screen doesn’t stick properly on it (around the volume keys only). When you look close on the phone you can see also a little wider gap between the touch screen top glass and silver plastic housing edge. (See picture)

WARNING
The following directions WILL VOID
your warranty - you are performing
this repair at your own risk.


So, now, what you have to do:
For those, who have already dust in, just simply disassembly your device (if you are brave enough, have all tools and precise hands - maybe some experience :eek:) and remove PROPERLY all dirt with brush, compressed air and antistatic cloth, then assemble it back or send the device to the service center to clean it (wont void the warranty). Before sealing your TD2 (keep it in plastic bag away from dust) prepare a sharp wooden toothpick, neutral transparent or black silicone (you can purchase it from any building material shop) and cotton cloth.

Now you have to clean the gap between whole plastic silver housing frame and touch screen top glass with soft brush. Then use sharp wooden toothpick to impress the silicone into the gap (all gaps you can see, just in case) (silicone does not damage phone housing and TSCR surface and it’s easy to clean), then just gently and properly wipe off all the rest of silicone from phone surface. (be careful not to get silicone to the keys or phone receiver slot)

Leave the phone for several hours to get silicone dry.

Then you can use your TD2 in dusty environment and your display stays absolutely clean and dusty free. (TESTED on mine, for me perfect phone now and I am very happy with it...)

For those who have a little dust in and want to stop come more in and those who are planning to buy TD2 (dont wanna play the lottery faulty or not :D), do the same procedure (silicone impress only) after unwrapping your device from plastic package.

;)GOOD LUCK!!! ENJOY YOUR ABSOLUTELY DUSTY FREE DEVICE!!!;)
Sorry for my English :eek:
 

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s1rl4ncel0t

Senior Member
Jul 14, 2007
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Portugal - Lisbon
I don't know about you guys, but I'm not crazy enough to void the warranty of my phone because of a minor thing like that. When mine gets dirty, I send it back and that's it.

If it gets dirty again, I send it back again...


But, it's a good tutorial for the "brave ones" anyway :) Thanks for sharing your experience with us.



HastaSSSS
 
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bishbosh

Member
Jan 10, 2008
12
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I sent mine back over a week ago due to this dust problem (in fact I delivered it in person to HTC repair center in Milton Keynes) hoping for a quick turnaround.

I'm still waiting for it to come back and missing it terribly.:( I'm back to using my old Nokia E71 which is a great phone but I like my new one and want it back :mad: so I may go down the route of the OP just so I don't have to repeat the return each time I get a dust issue.....
 

supreme_one333

Senior Member
Feb 16, 2008
89
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0
I just got a topaz and want to keep dust from getting in but I'm confused about the sillicon. Could you describe more clearly what it is and maybe post a picture so I have some idea what it should look like.
 

georgeono

Senior Member
May 24, 2009
195
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Botosani
from the picture, for the second gap, apply the protective foil that comes with the phone. Should solve a bit the problem. Ber in mind that after apply, the touchscreen will not have the same sensitivity. You'll have to tap a little bit harder ...
 

rumpleforeskin

Senior Member
Jan 20, 2008
535
12
0
I thought these dust under the screen issues had been fixed long ago, but now it seems the problem that affected my old c600 has come back to ruin my topaz after just 1 week.

Not impressed.
 

supreme_one333

Senior Member
Feb 16, 2008
89
0
0
from the picture, for the second gap, apply the protective foil that comes with the phone. Should solve a bit the problem. Ber in mind that after apply, the touchscreen will not have the same sensitivity. You'll have to tap a little bit harder ...
I already use a screen protector. I'm more concerned about the first gap. I really don't want dust to happen since I bought my phone second hand and it doesn't have a warrenty.
 

supreme_one333

Senior Member
Feb 16, 2008
89
0
0
Wouldn't you need two holes that are connected if your blowing air into the device? One for the air to go in and one for the dust to go out? I don't have any dust under my screen currently and would like it to remain that way. The silicon method doesn't seem to difficult or dangerous which is why I'm interested in what silicon to use.
 

axantas

Member
Jun 17, 2009
21
0
0
I opened the D2 (only the two upper screws - for lifting the inner part a bit) and did have a look for "gaps" somewhere around the volume controls - i did not really see a gap :confused:

But for getting out the dust: dont blow air into the D2 but get the air out - i actually used a vacuum-cleaner. If you remove the two screws it is possible to lift the LCD below the volume sliders *A LITTLE BIT* (=about 0,5 mm only!!!!!) with a small screw driver to create a gap. It worked quite well. (be aware of high air flow and possible static electricity)

But i really would like to know, where exactly to apply some supplementary sealing to get rid of the dust-problem. Any detailed pic would be appreciated.
 
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pedroo

Senior Member
Aug 1, 2008
81
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0
OK, people, just put some neutral silicone between (in the gap) silver plastic frame and touch screen (there is just 0,2 -0,5 mm gap, almost invisible) and you wont get any dust under the touch screen. This is the best solution, you could do it from inside, but its much more complicated...
 

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supreme_one333

Senior Member
Feb 16, 2008
89
0
0
OK, people, just put some neutral silicone between (in the gap) silver plastic frame and touch screen (there is just 0,2 -0,5 mm gap, almost invisible) and you wont get any dust under the touch screen. This is the best solution, you could do it from inside, but its much more complicated...
What exactly is neutral silicone? Do you have a picture of it so I know what to buy?
 

axantas

Member
Jun 17, 2009
21
0
0
OK, people, just put some neutral silicone between (in the gap) silver plastic frame and touch screen (there is just 0,2 -0,5 mm gap, almost invisible) and you wont get any dust under the touch screen. This is the best solution, you could do it from inside, but its much more complicated...
Thanks for the pic, pedroo - so they simply should have glued the digitizer surface a bit more careful to the housing...
...thinking a bit about applying the radical solution - not sure yet :)