1973 Fender Deluxe Reverb.
I have always used the on/standby switch in what I thought was the correct manner, but now when I turn the "On" button I blow the fuse within a couple seconds.
Ground switch is in the center position, is that correct?
Amp was serviced and recapped last fall.
Any ideas for me or does it need to go back to the service tech?
Thanks, Gary