I recently cleared out my speakers because we did not use them any more, This amp was just sitting there not being used so i thought i might hook it up to my pc. I I plugged the power in and nothing, no front display showed so I decided to try on the tv again with hdmi plugged in and power on nothing was showing on either display. It could very well be broken. But when I plug a sub woofer into the back with everything powered on it does make a BOOF so something is happening im not sure what though. The only light that works is a red light next to MAIN ZONE that never seems to turn off(only when unplugged). Im not to smart when it comes to this sort of stuff. There doesnt seem to be any viable damage on the AMP.