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  • SVT 1000

    This amp came in w/ a blown circuit breaker. I replaced it and it seemed fine. Owner brought it back. The amp was then shutting down after 5-10 minutes of playing. Power light stayed on but domething would make a popping noise and then there'd be no sound coming out.

    I disconnected the preamp chassis from the power amp chassis and plugged my guitar in the power amp in. The amp was not shutting down during this test. I then reconnected everything out of the cabinet on my bench and noticed the fan frame was cracked - allowing the blades to spin off-center and not allowing the fan to spin. I fixed the crack w/ some super glue and the fan works as well as the amp. It's been on for 1/2 hour now w/ no issues. Could it be that the thing was getting just hot enough w/o a fan that it would shut down? Seems extreme but maybe someone has experienced this?

  • #2
    Perfectly reasonable, after all, that is why they put fans in them.

    Plug the amp into a metered outlet and see if the thing draws increasing current as it warms up. Just to be sure.

    If the fan had been held and unable to turn, I think I might have replaced it. WHo knows how hot the stalled fan might have made itself.
    Education is what you're left with after you have forgotten what you have learned.

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    • #3
      Ok thanks Enzo. I forgot to mention that I had metered the wall current and wasn't getting much of a reading and it didn't seem to be rising at all. I cannot get the amp to act up now, even when I stall the fan w/ a chopstick..?? Now I'm worried it'll just start happening again if I give it back to the owner.

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      • #4
        If the fan stops, it won;t instantly overheat.
        Education is what you're left with after you have forgotten what you have learned.

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