[HAM] HELP WITH M-103

[Scott Hawthorn]

At 01:21 PM 9/6/2007, Dave Bishop wrote:
>If you do a search on this list for "flash" or flashing" you should come
>upon instructions about how to remove dendrites in the vibrato switch that
>may be shorting the signal out.

His vibrato works fine. It's the non-vibrato channel that doesn't.

Mike, first, trade V1 and V2, both are 6AU6s. These V#s are stamped on the 
chassis. If the problem moves to the non-vib channel, it's the tube. 
Otherwise, it's likely to be pooped-out resistors servicing V1. Do not 
attempt to measure resistances under the amp unless the organ has been 
unplugged for a few hours, or you might get a bad shock. The schematics can 
be downloaded from www.captain-foldback.com.