Hey everyone,
New to the board, looks like an amazing source of Boogie expertise.
I picked up my first Boogie today - an old .50 caliber, quartet of EL84 power tubes (even says "Class A" on the back, I really doubt that), 5 12AX7s, metal rocker switches on the front panel.
I plugged it in, let the tubes warm up for a few minutes - took it off standby, and started playing. Sounded great for the first 3 minutes - then the volume started to slowly fade in and out, almost like a tremolo effect at a really slow speed.
Anyone have a similiar problem, or know of a possible fix?
Thanks.
New to the board, looks like an amazing source of Boogie expertise.
I picked up my first Boogie today - an old .50 caliber, quartet of EL84 power tubes (even says "Class A" on the back, I really doubt that), 5 12AX7s, metal rocker switches on the front panel.
I plugged it in, let the tubes warm up for a few minutes - took it off standby, and started playing. Sounded great for the first 3 minutes - then the volume started to slowly fade in and out, almost like a tremolo effect at a really slow speed.
Anyone have a similiar problem, or know of a possible fix?
Thanks.