Slow or not working touch screen

[svend_e]

Hello

2 days ago I got a T-mobile MDA from a friend. Only the MDA and a cradle. It had not been used for at least half a year. At first I could not make it work as it did not react to the stylus on the touch screen. But after some resets it slowly came on, and was fairly working (slow sometimes)
As I wanted English SW, I downloaded one and installed. After some time the problem came again, and I decided to switch back. Then it stopped working again.
Sometimes I can get to the calibrating touch screen, but then it stop reacting.
I read about similar problems on this website, but I cannot install the file tpenable.exe until I get into operating system, and can use the touch pad.

I tried with a couple of ROM-versions, but it seems to have no influence. Still, to me it feels like a SW-problem.

Anyone have some suggestions?

brgds

Svend_E

[svend_e]

Here is a follow up on my problem:

I discovered that if I press hard at the lower quater of the touch screen, sometimes it works again. This points more to a HW problem.

I took the MDA apart a couple of times, but could not see anything wrong. Does anybody know how the touch screen technically works?

I noticed in another post about someone with a similar problem. Do anybody know what exactly he was soldering?

http://forum.xda-developers.com/viewtopic.php?t=48540

Please help me

brgds

Svend_E