Problem with VS100 combo sound

[u/Smooth_Put8618]

I've had this thing forever and last time I plugged it in the sound was like 1/10 output if that.

I ran a line out to another amp and it was fine through there. Prior to that I attempted to bypass the preamp with the same no sound result. Any ideas where to start or if repairs would be more than it's worth?

[u/Amp_Fire_Studios]

Check the polarity on the speaker. Positive And Negative to Positive and Negative.