HMMMMMMMM

I just bought a used Frontman 65R. When I turn it on, it is quiet as a mouse, as soon as I plug a cable into it, even with no guitar plugged in, I get the obnoxious 60 cycle hum. I thought I bought a pretty good cable, but maybe not. So I tried a different cable, same thing.

Any thoughts?

Could be a defective input jack or a bad electrolytic cap in the power supply.

+1 on a bad jack!

Thanks guys. I'll tune again when I have a look at it.

Quote:

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Originally Posted by El Jeffe

I just bought a used Frontman 65R. When I turn it on, it is quiet as a mouse, as soon as I plug a cable into it, even with no guitar plugged in, I get the obnoxious 60 cycle hum. I thought I bought a pretty good cable, but maybe not. So I tried a different cable, same thing.

Any thoughts?

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60 cycle? Or 120 cycle? That would be where I would start.

There's a big difference.