Screen not responding to touch

i had the same problem and figured out that when i put the screen protector on that it got between the housing and the screen and put just enough preasure on the screen it would not let you do anything.if you put your finger on the screen and apply some preasure and then try to use the stylus it will not allow you to .hope this helps someone.

im not sure what kind mine is but its having the same problem, I havent used it for around a year or 2... Could it just be broken or is the thing fixable?

Thanks!

Solved same problem.
Same model ipaq 1940.
Sorry for my bad english;this is what You can do:
Open the ipaq
Remove the mainboard
My problem was the connection between LCD and Touchscreen.
So I solved putting on the connection 3cm of tape to have a fully working contact.Indeed, the lower part of cable, with the 2 little holes was disconnected.
After this all becames to life!
I hope helps!
Vit :-)
In italiano: 3 cm di nastro adesivo fra LCD e touchscreen.Il loro contatto non era perfetto.Ora tutto funziona.Con un po' di manualità si riesce a fare senza problemi!
Saluti, Vit