So i was in the middle of my jam session and then all the sudden i heard a crackle and then silence. so naturally of course i thought i stepped on my cord or had a weak connection somewhere between my pedals, nope. then i notice i'm still going through, but the volume is extremely low and distorted. so i turn off and unplug and then hook my other bass up directly to the amp, no pedals inbetween. nothing, silence. i unplugged with the amp still on, not getting anything at all. so i turned it off and then back on and i heard a distinct "click" inside the amp and it started working again, both basses sound just fine. but i stopped to be safe. any ideas as to what might have happened?