Sony SCD-1 Player NO DISC DETECT

AFTER I HEAR ONE OR TWO CDS O SACDS, MY SONY SCD-1 DOES NOT DETECT ANY DISC (CD OR SACD). I HAVE TO TURN OFF THE PLAYER, WAIT SEVERAL MINUTES AND TRY AGAIN. SOMETIMES IT WORKS. MAY SOMEBODY HELP ME (I AM LIVING OUT THE STATES). I WILL APPRECIATE YOUR COMMENTS.