Channels 3 and 4 on my Tourmaster 4100 stopped working..

[blumuz123]

all the tubes are still lit. check it without the foot pedal and have the same problem.

Anybody have any thoughts? I need it this weekend.

Thanks

 

[John Ewing]

Either V2 or V4 has gone bad. They control those channels. All will be better soon.
john

 

[blumuz123]

Either V2 or V4 has gone bad. They control those channels. All will be better soon.
john

which preamp tubes are V2 or V4? and is a jj ECC 83S the same as a 12AX7 tube?

Thanks

 

[blumuz123]

Thanks John!

v2 did the trick