Charvel1975
Active member
Well just swapped all the tubes except for the stock Mesa 5u4g's and no sound at all??!! I did notice when I turned the amp on and was checking all of the tubes to see if they were lighting up that the one jj 6l6gc 2nd from left wasn't glowing but when I moved it a little it started glowing and then when I took the amp off standby there was a little bit of a blue glow in it? All the tubes were glowing fine, couldn't see the V4 preamp tube cause of the cover but everything was hooked up right, etc. I don't know what it could be??!! 