Caps OK, then also verify that the negative end of each has continuity to ground and that the B+ is on the + end of each. A good cap is same as a baqd cap if the connections to it have failed.
Just a query, the two OT primary wires, the blue one is on TP19, the one between the two tubes?
If the bright switch does anything in the dirt channel something is wrong. The relay K1b completes the path to ground for the bright switch. But only when in clean. With bright switch OFF, measure R102 below it. DO you get 1 meg when it dirt channel??
I have no reason to suspect C4 of anything, it apparently switches in and out OK and increases the gain of the stage.
When it does this, push on the gray ribbons connecting the main board and the tube socket board. Does that do ANYTHING?
When it is doing it, does pushing the MORE GAIN switch change the noise in ANY way?
I must need drugs, I am starting to imagine a cockamamie feedback path through the C8, C9 and the JFETs.
In the clean channel the drive control should have no effect, volume control works. In the dirt channel, the volume control should do nothing while the drive control works. Is that the case?
Just a query, the two OT primary wires, the blue one is on TP19, the one between the two tubes?
If the bright switch does anything in the dirt channel something is wrong. The relay K1b completes the path to ground for the bright switch. But only when in clean. With bright switch OFF, measure R102 below it. DO you get 1 meg when it dirt channel??
I have no reason to suspect C4 of anything, it apparently switches in and out OK and increases the gain of the stage.
When it does this, push on the gray ribbons connecting the main board and the tube socket board. Does that do ANYTHING?
When it is doing it, does pushing the MORE GAIN switch change the noise in ANY way?
I must need drugs, I am starting to imagine a cockamamie feedback path through the C8, C9 and the JFETs.
In the clean channel the drive control should have no effect, volume control works. In the dirt channel, the volume control should do nothing while the drive control works. Is that the case?
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