After installing the new J/J KT-88 Power Tubes into an Ampeg SVT-CL, having robbed it of it's Sovtek 6550 to use in the Fender Super Bassman, I discovered the upper Preamp OUtput jack on the rear panel was broken, while the lower Power Amp Input jack is ok. Ampeg P/N 39-125-01. I've narrowed it down to the Cliff S2S style stack jacks, as the centers are 19.0mm (the other is 16mm centers). Upper Jack non-switching, lower jack is Switching (normal's the upper jack source to the Normal contact of the lower jack, interrupts with insertion of plug).
So far, I've not found any parts house stocking these. Also, haven't yet contacted Yamaha to try to get past their defenses preventing non-service center people from buying such a part.
I thought I had some photos of that power amp PCB to add more detail in the parts search. Schematic designations are J3A, J3B. I haven't yet called Antique Electronic to see if they can order the part. Studio Sound Electronics didn't show it in their lineup of hard-to-find jacks.
JackSocketsS2S.pdf
So far, I've not found any parts house stocking these. Also, haven't yet contacted Yamaha to try to get past their defenses preventing non-service center people from buying such a part.
I thought I had some photos of that power amp PCB to add more detail in the parts search. Schematic designations are J3A, J3B. I haven't yet called Antique Electronic to see if they can order the part. Studio Sound Electronics didn't show it in their lineup of hard-to-find jacks.
JackSocketsS2S.pdf
Comment