Marshall Valvestate 65R Repair?

[mars2010]

hello, i've got a used valvestate 65R that only sends signal out of the 'line out'. i'm wondering if anyone has ideas on what kind of fix might be needed. i'm getting ready to change out the 12ax7 tube and hoping for a quick fix, otherwise i'll have to start looking at schematics. thanks for any ideas...

[jim p]

Looking at the schematics over here http://www.drtube.com/marshall.htm I don’t think your problem will be the tube or the line out would not work. Guess the problem is either signal connections in the amp at send and return jacks or PCB connectors or the power amp section. There should be a +/- 45 to 60 volt supply in the amp for the power stage I would check for that first.