What a coincidence, I’m picking up two broken GC-1000’s next week . A working unit, or was working, is not common, they seem to have had a very high failure rate for some reason. Everyone is using high voltage inverters nowadays, the GC-1000 was a low voltage inverter, 36V to 48V only. It doesn’t have much value though, mainly because I’m about the only one in the world that fixes them. But I might still be interested in taking it off your hands.
I have 1 GC1000-SA. I have had it for 4 years, when I was given it from a friend. I was told it was working when removed from operation. That is all I know. If interested in it let me know!!!
Sam