Thread: N900 Touch Screen Has Stopped Responding To "touches"
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vi_ is offline vi_
2011-08-18 , 08:43
Posts: 1,680 | Thanked: 3,685 times | Joined on Jan 2011
#10
Originally Posted by chiques View Post
So here is a bulleted chain of events prior to my touch screen failing to respond.
  • have had my phone since February 2010
  • have NEVER dropped it on the floor
  • went swimming an hour before
  • kept my swimming trunks on and dried out enough to sit in a restaurant seat
  • put my N900 in my pocket with minimal dampness
  • TOUCH SCREEN NO LONGER RESPONDS TO PRESS/TOUCHES that evening.

Here is what does work:
  • phone and OS boot fine (after flashing because I was locked out)
    • Touch screen looks like new (virtually no scratches)
  • touch screen has some sort of response but nothing predictable (just random touches SOMETIMES reacts)


This is what I've tried.

I've tried to re flashing using instructions on http://wiki.maemo.org/Updating_the_tablet_firmware without success.


So I've investigated a bit and it appears there are OEM screens I can purchase and there are youtube videos that make it feasible to replace. I don't have a problem investing in a replacement but I just want other people's feedback. Any feedback is greatly appreciated.

REFERENCE: http://youtu.be/pDQ81cahD1c
Sounds like there could actually be moisture inside you screen assembly.

To visually inspect, dissassemble The screen assembly. I would go so far as to remove the LCD. I.E. seperate the LCD, DIgitiser and slide mechanism.

I highly doubt they have been physically damaged.

Leave these parts in a warm dry place over night. i.e. on top of the fridge/in airing cupboard/whatever.

Re-assemble and check to see if the problem persists.

If the problem persists that would imply the problem lies a little deeper. If that is the case, seal it all back up, feign ignorance and sell it on ebay with a vague clue 'the software screwed up'. Some N900 enthusiast will buy it in the hope that it only needs a reflash.

word of caution, the screws on the screen assembly are SUPER lightweight, do NOT over tighten them THEY WILL STRIP!

This is all assuming your phone is out of warrenty...
__________________
N900: One of God's own prototypes. A high-powered mutant of some kind never even considered for mass production. Too weird to live, and too rare to die.
 

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