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  1. DISCOSTU82

    Resistors R141 and R104 values

    Mark III Red, I was looking over my PCB and the schematic and noticed that R141 and R104 on my PCB are both 1K ohms. All the other schematics and photos of other PCB"s show that R141 is 5.6K and R104 is 1K. Should I sort this?
  2. DISCOSTU82

    Mark III Red Channels not working.

    Cheers I will clean the jackets up and check again.
  3. DISCOSTU82

    Mark III Red Channels not working.

    Yeah I was hoping it was the tubes but I've swapped them out one at a time and no luck.
  4. DISCOSTU82

    Mark III Red Channels not working.

    Okay, the channels still switch fine. All the orange drops were changed out 2 years ago, I would hope they would be okay, With R2 channel still working fine and I can alter the bass, mid and treble could it still be a tone cap? Cheers
  5. DISCOSTU82

    Mark III Red Channels not working.

    Mark III Red Stripe. It was working great, then one day.... R1 and Lead channels are really super quiet. I have to turn everything up to 10 to get any sound out of the amp. It sounds like the tone stack is working bass,treble etc alter when I turn the knobs. Now the strange thing is R2 works...
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