On 12 Jun 2006 10:53:24 -0700, "Ron" wrote:

I just bought a rather nice electric guitar kit for a hundred bucks
that came with a 10 watt amplifier. The guitar is pretty nice but the
amplifier has a rather nasty hum. I thought it was a vacuum tube amp
but found out it actually has transistors-- or an IC amplifier-- I'm
not sure.

The power transformer is pretty close to the circuit and the wires for
it were tangled with some of the speaker wires. When I untangled them,
the hum disappeared... until I plugged into the jack the guitar cable,
then the hum came back. Does anybody have any suggestions for getting
rid of this hum problem?

Ron


If you can duplicate the situation where there is no hum from the amp
when the guitar lead unplugged then you are halfway home. If the hum
occurs only when the guitar is plugged in then the problem is most
likely to do with the shield connection in the guitar cable.