I use this primarily for a sound system, the unit is plugged into a surge suppressor along with my TV and DVD player. Two days ago there was a 2 hour long power failure, when the power was restored the display on the unit was dark and it will not power on. I checked the surge suppressor and it is working. I disconnected the unit and plugged it into another outlet - still no power up. I did check the fuse located near where the power cord comes inside the unit and it is good. Are there any other fuses located elsewhere inside the unit?