SANSUI AMP AU-D11-II

Question

TOOK THIS TO A LOCAL TEC. AND WAS TOLD THAT THE PROTECTOR CIRCUIT WAS BAD AND THAT IT WAS A FACTORY FIX.. WHEN TURNED ON THE LIGHT COMES ON AND THEN BLINKS RAPIDLY BUT THE SYSTEM DOES NOT START. I KNOW THE UNIT USE TO CLICK WHEN THE LIGHT WENT OUT. COULD THE SWITCHES BE BAD OR IS IT THE CIRCUIT PRIOR TO THE SWITCHES. I HAVE A SCHMETIC OF THE AMP BUT IT WON'T TROBLE SHOOT. ANY HELP WOULD BE APPRICIATED. THANKS DG