Thanks Rob.

Age is around 15 years, so could be the problem. Tho, given the close sequence of events, I'm minded to link the problem with the USB/R232 COM port replicator. Need to dig the board out of its enclosure to inspect further.

Could really do with finding someone knowledgable and keen enough to take on the challenge of fault finding and repair. Loathe to start climbing the long hill of replacing unsupported stuff with new hardware and software. I've been very pleased with the ease of use and performance of the original setup.


Stewart