So I’m just diving into this Polysix repair, the 367 was shot so I ordered a
https://synthronics.de/klm-367a-replacement/ and swapped out the 8048C-345 and hooked it up but no activity from the keyboard or the arpeggiator. When I click through the memory banks I’m definitely hearing changes in fx or in LFO rates, and the filter is working, so I’m thinking it’s something on the 366 board, but figured I’d ask here if anyone had any recommendations on what to zone into first. I also have a working polysix at my home so was thinking about swapping out the 8048C-217 and see if it’s just a bad chip. Anyway any help is always appreciated.