Last night my old Harmon Kardon amp stopped working. I have: Project Debut 2 turntable (2001)Roksan Kandy KA-1 stereo amp (2001)Sony BDPS790 3D player (2013)Standard Plasma screen (2005ish) - Hitachi 42PD7200Harmon Kardon AVR 330 amp (broken - lights come on, no sound)Humax FOXSAT-HDR Freesat+...