[sdiy] Reverb picking up power supply hum

[jvastine]

...well with my limited knowledge of electronics I would be inclined to agree with Paul here regarding grounding, but how about if you tried shielding the reverb tanks, power supply, or both with some copper foil like that which is used by some guitarists to isolate the electronics from the pickups. I seen recall reading somewhere...perhaps on this list, that this was a viable solution for another with the same issue. 

On another note, is it possible that changing the orientation of the power supply could introduce other problems in some modules created by the magnetic field(s) radiating from the power supply?

jvastine

---- Paul Perry <pfperry at melbpc.org.au> wrote: 
"I know building a little case for my power supply and leaving it external 
would work, but that is definitely the last thing I will do."

I think it is the FIRST thing that I would do, because I am almost certain 
that the reverb coil is picking up magnetic hum radiated from the power 
supply. No amount of dicking around with grounding will help, if that is the 
case.
It may bepossible to find an orientation of the PSU and reverb to each other 
that will null the hum - but it is unlikely to be a convenient orientation!

paul perry Melbourne Australia 

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