"Rob" wrote in message
...
I've just plugged in a Quad 34 preamp that's been unused for a few years.
When I turn the volume control up there's a series of loud high pitched
clicks through the speakers, a bit like LP static discharge maybe. It was
fine last time it was used.

Does this sound like an expensive problem, or would I be better off
punting it on ebay, and buying another (about £80 it seems)?

Thanks, Rob

See if you can spray some contact cleaner in and then twiddle the control
for a while with the unit off. Leave it to dry out and try it again.
Go for something like Servisol.