From: K6OKL(a)aol.com Hello Dwight- Google led me to your discussion with Gilis in the Netherlands a while back and I thought you might be able to help with a little problem I have if you were willing. I borrowed an iUP-201 from a friend and it seemed to initialize OK. After I plugged in a 27128 ROM to see what was in it, the unit froze and now gives a "Power Supply Failure" display and won't do anything else. I looked inside to see what the four power supplies were up to and it appears two of them turn on with commands from the F27/128 module, and were not doing so.

The only documentation I have is a Pocket Programmer Reference and it's not much help. Do you have any suggestions on how I might troubleshoot this machine or at least get some documentation on it? Thanks for your help... Walt Lindell k6okl(a)aol.com