cracking sound in jtm45

Discussion in 'Marshall Amps' started by alessandro1300, Jan 23, 2021.

  1. alessandro1300

    alessandro1300 New Member

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    i have a jtm45 that produces a horrible cracking sound if volume is increased past 3
    i took it to repair, they soldered the jack better and it was getting better but still cracks, just not as violently as before, any tips?
     
  2. ken361

    ken361 Well-Known Member

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    Good chance its a power tube I had that many times
     
  3. Kinkless Tetrode

    Kinkless Tetrode Well-Known Member

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    On tube rectified amps crackling can be a sign that the rectifier tube is about to give up, too. If it starts blowing the main fuse then that clinches it.
     

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