FX loop kills preamp TC-50
I have a Mesa Boogie TC-50 combo. Just got it the other day. When I use the FX loop, it just kills the preamp section. I lose ability to use the controls on the front panel, when I change channels nothing happens, and there is no amp distortion.
I have it set up using the 4CM. I’ve even tried running a cable in the input of the amp and having the G-system run through the fx loop, and still nothing. Is there something that I’m missing?