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I must have been going to quick when I checked each tube before. Pulled V3, put in a new tube, and sure enough I am back in business. Thanks!!! My only concern is my amp seems to be going through preamp tubes. The guy at the shop said occationally Mesa will have a bad batch of tubes...

Last weekend I had a gig. Everything sounded great in soundcheck. Right before we started, I turned on ch 3 and there was almost no volume. Ch 4 was the same. Clean ch 1 and ch 2 were fine. I had to crank the volume on 3 and 4 almost all the way up to get enough sound. Tonight, I swapped...

OK, I figured out the problem. There was a short on the reverb input coming from the tank. The plug was touching the ground wire which would cause it to short out depending on the angle of the plug. Seems like Mesa would have done a better job soldering this to avoid a problem. Anyway, a...

I am having a weird issue with my Roadster head. I am using a GCX and Ground Control to switch channels and active the Solo boost. When I am using this setup, my reverb does not work. When I pull everything out of the channel switches and turn the amp back on, the reverb works. I have tried...