Ron(UK) wrote:
Pooh Bear wrote:

Ron wrote:

ian field wrote:
(snip)

Plug the cable into the amp and instead of plugging the other end
into the
guitar - short the tip to the body & see if the hum stops.
Hmm, actually that makes the hum worse.

The amp's faulty in that case.

Graham


Or the screen is open on the cable.

Ron(UK)


Or the ground side of the input socket is open circuit, probably
fractured solder joint. It will ground when no plug is inserted if it
has a shorting contact on both sides.

Ron(UK)

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