[pmrid (Peter)]

I have - or I should say had - two QHY5s - and both have performed well in their role as a guide camera but in the past 6 months, both of them, at different times, have become distinctly flakey. Work one day - not the next sort of thing.
Both of them have now become unreognisable by their drivers - either conventional or ASCOM. They come up as a new piece of equipment (same USB port by the way) and their drivers can't be found either by browsing locally or by letting Windows do the searching.
I've tried the same cameras on different computers on which I know they have worked in the past - with the same results.
One of them went back to Theo some months ago and worked for a while on its return but it's now gone the way of it's mate.
I wonder if anyone else is having these sorts of problems and whether anyone has any idea as to cause and/or cure.
Peter