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Any chance someone has the schematic for the Mesa Boogie Dual Rectifier Rectoverb 25 head?
Thr reverb circuit is InOp.
Thr reverb circuit is InOp.
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I got the reverb straightened out.
There are two J174 jfets around the reverb 12AX7.
One on the reverb send & one on the return.
The drains went to the grids of the 12AX7 and the sources where at ground.
The return one was shorted gate to drain.
There is a jack on the rear of the amp to turn the reverb on & off.
The ring is at ground & the tip goes to the two jfets gate pins.
Grounding the gate voltage would turn off the reverb.
The hint was that I had no gate voltage (+13.5Vdc) on either jfet or the jack when the reverb was On.
It was 90 ohms from ground because of the D to G short.
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