i have an old solid state amp here that plays but has a few little things wrong with it here and there. Would it be hazardous to open it up (obviously unplugged) and take a look around inside. I know this is quite a no-no for tube amps because of lethal voltages even when off. but i was just wondering if same applies for solid state. btw. its an old roland jazz chorus55 (yeah i know its a guitar amp, but the owner previous to me said he replaced the speakers with some others to handle the frequency of bass). so i use it for both.