Hey guys, I jut received a peavey JSX and i plugged in the power cord. What i didnt realize was that the on power switch and standby switch were in the on position. I quickly realized this and turned it off. Plugged in my cab. Set impedance to 4ohm on both the head and cab and no sound. Tried 16ohm, no sound. The lights on the amp for the fat switches and clean dont turn on. Help guys?