Preamp Tube Problem? Channels 1 & 3 Major Volume & Gain Loss

[BrownieD2W]

Hey Guys,

I had a new problem today, major volume and gain loss in Channels 1 & 3. Channel 3 is the most noticeable, barely any gain with the control maxed and very large loss of volume. Channel 2 seems to be perfectly fine.

So looking in the manual at the Preamp Tube Functions List I was wondering if its

V1B -2nd Gain Stage Ch1/Ch3

or

V3A - 3rd Gain Stage Ch1/Ch3

Or am I completely off and its one of the others or possibly more than one??

 

[eudaimonia02912]

Yes, I'd check V1 and V3 first. Then V4 and V5.