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Roland JC 77 reverb issue

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  • #31
    Well, gremlins. As I mentioned, I gave up, and zipped the amp back together. I let it sit for a day, then plugged it in just now to verify function. Reverb is working! WTH. I turned the amp on it's head, beat it against the floor, no problem.
    --
    I build and repair guitar amps
    http://amps.monkeymatic.com

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    • #32
      You must have inadvertently fixed it. The reverb in these amps is reported to be thin and weak (I looked into it ) So maybe that's what your bench tests actually showed. What you're hearing then is what you tested.?. and was considered "acceptable" by Roland for this amp.?. Call it a win
      "Take two placebos, works twice as well." Enzo

      "Now get off my lawn with your silicooties and boom-chucka speakers and computers masquerading as amplifiers" Justin Thomas

      "If you're not interested in opinions and the experience of others, why even start a thread?
      You can't just expect consent." Helmholtz

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      • #33
        After reading and understanding (!) your description of what the tank does to the signal, I stopped testing with the scope and used my ears. So, no, the reverb wasn't working at all until I reassembled the amp into it's combo cabinet. And the reverb is now quite nice, actually. The three-spring Accutronics tank sounds quite nice, not thin or weak at all.
        --
        I build and repair guitar amps
        http://amps.monkeymatic.com

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        • #34
          It must have been C14,15 since that's all you did to it. Glad to hear it's fixed.
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