Touch screen cursor moves by itself?

Question

Built myself a touch screen jukebox last year , stuck it back up in my new house but the cursor moves around the screen by itself.

It runs on xp, so its the same as any pc cursor.

I've cleaned the screen which didn't help. When I unplug the usb cable and use a mouse instead the cursor works fine.

Any ideas, cheers

Answer 1

I suspect the touch sensor circuits may use some fairly high impedances - that is, they may be sensitive to contamination that bridges any circuit traces or connections.



You may need to clean more than just the surface of the screen - try looking at the connections and circuitry related to sensing the screen.

Answer 2

It sounds like the portion of that display that controls the cursor might have a glitch in some manner. I'd make sure that the PCB is free of any dust / debris, and that there's not a high powered fan near by that might mess up the display's reading. I saw this once in a friend's business where the mouse cursor was dancing across his screen because an overhead vent was blowing air at just the right angle and triggering the mouse to move around erratically.



You might want to investigate that screen in another setup if possible, connect it to another PC if the interface supports it and see if it causes the problem there as well. Then you can isolate the problem to that particular piece of equipment and then escalate it to the company that made it.

Answer 3

That arrow is termed a "cursor." in case you have a mouse that doesn't have a music ball, then your cursor could circulate by applying itself each and every so often--yet only in a strait line! in the experience that your cursor isn't shifting in a strait line while it does that, then that's a foul factor. somebody's have been given administration of your cursor.