Lilliput 629 (transflective) touchscreen problem

**jbradshw** · 06-04-2008, 09:50 PM

I've had this since March, this is the 2008 model. It worked great for about the first 2 weeks, then I noticed I've had to calibrate it about once a week.. then it later it came down to once every 3 days.

Fast forward to about 3 weeks ago. I can no longer calibrate it to where it works. I try the 4 point calibration, clear and calibrate, 9 point, 25 point. Any of them, after i finish, the mouse just jumps to a corner and sits there no matter where I touch it.

Now as of a few days ago, the touchscreen no longer recognizes any touches. If you try the 4 point calibration, it doesn't even detect being touched anymore.

I'm pretty sure the driver is good as it worked great initially - I'm using the egalax one and I've updated that as well to see if that would fix it. To see if it was maybe my system I pulled the screen out of my car and tried it with another computer and it detects the touchscreen when I plug it in the USB and I give it the driver I've used in the car, but again when you try calibrating, no detection of touch.

Any ideas?

**blackcobra487** · 06-05-2008, 02:47 PM

If the pointer is going to one corner, that usually means that there is something stuck between the bezel and the TS overlay. It also sounds like it could be a controller problem. I'd try to take it out of the case and then calibrate it. If that doesn't work, a new controller costs $40 or so.

If you want, you could try to contact the MP3car store and see if they'll do warranty service on it, it's only 3 months old.

**jbradshw** · 06-05-2008, 04:01 PM

I think these screens only have a 60-day warranty. If it's a controller problem, where can I purchase one from?

**blackcobra487** · 06-05-2008, 04:27 PM

I know people use eBay quite often. I wouldn't know otherwise. I'm sure there are other places, just ask around.

**jake123** · 06-25-2008, 06:24 AM

i had this problem too.
it is not the touch screen, it is your DSATX power supply RS232 Brainstem diagnostics acting as a mouse.
try unplugging the diagnositic brainstem from your comm port and see if it makes a difference

**Discoputer** · 07-05-2008, 05:35 PM

I had a problem like that when I modded it into my dash..but the problem was that the screws were too tight. on the corner the mouse kept going to..so I loosened it till it was fine on that corner it kept going to...just a thought.

**mjo151** · 09-13-2008, 08:44 AM

I'm actually having a similar problem with my 629. I updated the drivers but that didn't seem to help. It will work correctly for a couple days then the mouse pointer will always goto the bottom left corner. I'd be interested in any solution you came up with.

**Mitro** · 11-18-2008, 09:52 AM

http://www.cartft.com/ if you need only the controllerm, i have replace it on my lilliput and works well.

**jbradshw** · 12-03-2008, 04:03 PM

I ended up RMAing and sending it back. It was discovered some solder work was needed to fix it. After a few weeks I got it back and it works perfect now.

Thanks Goce!