![]() I have to assume that the "-02" was a typo on the schematics.Īnyway, my point was that Randall not let this get in the way of fixing the amp. There were never any boards with JCM2-60-02 labelled on the boards. Even the newest replacement boards are still marked JCM2-60-00. Drawings labelled JCM2-60-02 are for boards marked JCM2-60-00. Or, can anyone take a look at the issue 5 front panel drawing I did find and have any advice for why the relay is not switching on? It's in the upper left section. But I cannot find a Issue 5 for the tube board, only issue 1, so I don't know how I am going to figure this out.įront panel bd JCM2-61-00 issue3 and JCM2-60-00 issue 5 is what I really need. I found a schematic for the front panel board, I have a Issue3, but this issue 5 matches the cabling in the amp. Then I discover there are several different issue numbers for the boards, and you have to have the right version in front of you to follow all these cables. CON2->Con3 JCM2-60-00, except when I find the other end of the cable it's not Con3 or whatever. So I go about attempting to trace signal path, but find the two conductor cables on this amp to be very difficult to follow. Now I find the clean channel A "crunch" switch (SW1) does nothing, and the Gain pot (VR1) does nothing. I gave it the full cleaning to rule out pots, switches, FX loop jacks, etc.
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