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  1. E

    New amp day. Need help

    Thanx for the advice. I'll look into it.
  2. E

    New amp day. Need help

    After i got it i opened it up and found 2 caps that had a leg broken. I repaired that but that didn't make it work. But in sure it helped lol
  3. E

    New amp day. Need help

    Yes exactly
  4. E

    New amp day. Need help

    Got a G80R CD combo for basically free today. And it doesn't work. So it does power on. But basically nothing else works. None of the channel leds light up. A schematic would be extremely helpful.
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    MOSFET reverb buzz

    Amplifier off when measured.
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    MOSFET reverb buzz

    I’m using my multimeter on the capacitance setting. And no it doesn’t hum with the tank disconnected. And the old tank simply doesn’t work so I can’t compare them.
  7. E

    MOSFET reverb buzz

    when I click the reverb on it hums. When I click the reverb off it does not. I’m 100% sure the hum is in the reverb section on the circuit
  8. E

    MOSFET reverb buzz

    Here it is on the print
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    MOSFET reverb buzz

    As a matter of fact I think it is important looking at the schematic because they are c51 (which goes from the ( foot pedal to reverb on/off transistor) to ground or 0 v) and the other is c59 which
  10. E

    MOSFET reverb buzz

    Here you go. You can see the out is grounded to the chassis and the in is insulated from the chassis the same as the new mod version. also out of curiosity I started probing the capacitance of several of the capacitors. I found that I can’t read the capacitance of any of the pink ones thought...
  11. E

    MOSFET reverb buzz

    Btw. Thank you all so much for your help figuring this out
  12. E

    MOSFET reverb buzz

    Yes. Both are 8DB2C1D
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    MOSFET reverb buzz

    so In this photo it shows that the housing is grounded through these rivets.
  14. E

    MOSFET reverb buzz

    The parts I’ve highlighted in these pictures appear to be pink resistors with 4 color bands. They should be 10n caps according to the drawing. I feel like that may have an impact on the circuit lol
  15. E

    MOSFET reverb buzz

    shouldn’t the pan be grounded already? But I will jump a wire from ground to the pan real quick.
  16. E

    MOSFET reverb buzz

    amp works good when the reverb is on 0. There’s a little little solid state hum when the master is cranked but nothing like what’s going on with the reverb.
  17. E

    MOSFET reverb buzz

    yes
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    MOSFET reverb buzz

    i don’t believe so. I’m getting this issue with the master volume on 0.
  19. E

    MOSFET reverb buzz

    i got a direct replacement to the one I pulled out. 8DB2C1D I don’t believe the wire is causing the hum. Although I most definitely could be wrong about that. But I don’t believe so.
  20. E

    MOSFET reverb buzz

    So would that blue line be like a silence loop that grounds any signal when the input isn’t plugged in? That could explain how there’s no noise when there isn’t a jack plugged in. But as soon as it is it breaks that silence circuit and the hum comes through...

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