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Loud hum on my guitar amp?

I'm having a problem with my guitar amp (a Polytone Mini-Brute, 13 years-old.) I was on a gig, taking a break, with the amp left on. I was out of the room, but I am told that there was a loud hum for a second and then it was dead. I checked and the fuse was burned out. When I got it home, I replaced the fuse, and a loud hum came out, even though nothing was plugged in. The loud hum lasted for about 2-3 seconds but seemed to be unaffected by the volume nobs. The fuse burned out again.

Any ideas?

One source said that I should check the filter caps. I assume that they are the big electrolytic caps down by the power supply. They seem to be intact (there is a slight bump on the top, but not much) and the solder joints seem OK.

What do you think?

2 Answers

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  • 1 decade ago
    Favorite Answer

    It is probably messed up.

    Source(s): Experience
  • Anonymous
    4 years ago

    its because of the fact you have the Distortion or the income up this could is you're playing steel or Heavy Rock and in case you p.c. to get a real heavy sound the income will continually ring out you are able to silence the strings by skill of resting your palm on the strings close to the bridge. you additionally can set your amp on a sparkling putting like turning down your income, and it won't play the ringing noise.

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