problem with Bluesbreaker voltages - help...

[HTH]

You can run a lead over to a ground point. Remember you are not grounding something in the signal circuit, you are only grounding a shield.

What is the voltage across the standby switch when it is OFF? If you put a cap there, it better bave a higher voltage rating than what you find there.

Pops are not necessarily from the switch arcing. The tubes are hot, and when teh switch is flipped there is a large current surge as caps fill up and voltages rise quickly in the circuits. The tubes amplify that into a pop.

Enzo,

in standby the switch has 360v on it. in 'play' mode it's got 418v.

It's been suggested that I put a 0.047uF cap from the cold side of the switch to ground but there isn't a convenient ground point where the standby switch is located.

Would a thermistor/surge-guard cure the popping if I connect it between the hot side of the switch and the B+ feed to the circuit?

[Enzo]

Little caps generally go across the switch contacts, not to ground. I do not generally "fix" standby switch pops, since they are normal and a fact of life.

[HTH]

Cheers Enzo,

The amp doesn't seem to be popping at the standby switch now anyway so it's not even an issue anymore.

I'll keep that info in my files.