Well, I'm in a little deeper. The M-500 (non-t) has a couple of "daughter" PCBs attached to the "mother" PCB power supply board. One of them has, I found out, 4 electrolytic caps on it along with a couple of transistors and resistors, and it's about 1" square! I think in the M-500t, they put the traces right on the mother board. Anyway, what a PITA to get off. The other daughter board doesn't have anything of interest to me in the refurb. area (right now). I popped the cover off to look at it - just a bunch of diodes, I think.
I was wondering where those caps were, as they are on the schematic, but didn't show up on the foil side image. The M-500t service manual had most of them. That's when I went looking at that funny black box on the mother board.
It should sound like it isn't there!
There is a difference between hearing and listening...
Making life enjoyable through expensive electronics.
Carver: C-4000 & C-1 preamps, PSC-60 preamp/tuner, TX-11a tuner, M-400 (2), C-500, M-500, M-500t, M-500t Mk.II, A-500x, AL-III loudspeakers (2 pr.)
Sunfire:Theater Grand III processor, Ultimate Receiver, Cinema Grand Signature 400 ~ seven, True Subwoofer Mk. II, D-10 Subwoofer