It also failed on my 6th voice but after replacing it, it was back to normal.
As I mentioned before it's a good idea to recap as much as you can inclusive the power board caps.
2012/3/5 steve_gruskin <steveg@...>
I've had my Xpander since 1985 and for the first time had a Voice Processor Error message. I re-set (start w/ Clear button) and now it sounds fine, but is skipping voice 3. Any thoughts? Should I do another re-set or is there another software cure for this? Thanks very much!