Uploaded December 2014 | Updated September 2026, 1 hour ago
This Jupiter 4 had 4 non-functional controls, caused by 3 bad op-amps. I replaced all three, plus a demux chip which turned out to be perfectly good. The replacement demux chip, however, was bad, so I had to remove it and install a third demux chip. After that all controls worked perfectly. Just finished screwing it back together. Here's a quickie demo!
I programmed this patch, saved it to Memory 1, and am playing it from the memory location. (If you look carefully you can see that Memory 1 is selected.)
This Jupiter 4 had 4 non-functional controls, caused by 3 bad op-amps. I replaced all three, plus a demux chip which turned out to be perfectly good. The replacement demux chip, however, was bad, so I had to remove it and install a third demux chip. After that all controls worked perfectly. Just finished screwing it back together. Here's a quickie demo!
I programmed this patch, saved it to Memory 1, and am playing it from the memory location. (If you look carefully you can see that Memory 1 is selected.)
