Miles, Thanks for your help. With the jumper moved it works fine.

I tried to move the jumper back and the problem resurfaced. So my last question. Is it a problem to keep that jumper moved?

Thanks for all your help!

Bill

It is a Rev 1.0

I am using WinXP home with SP1 with the device set to Com 3

Thanks for taking the time to ponder this one!

First let me start by saying that I am 100% new to the LCD arena. That said...here is the problem:
Brand new LK202-24-USB (just unpacked) .
Hooked up a usb cable to it...looks good
install (with some dificulty) the LCD Tester software
Works for a total of 3 minutes.
The second I tried the "Send Text ...