Hello all i am new here. I own 2 Marantz recievers. A 2270 and 4240. I have good basic understanding of how electronics work. I am an autotech. But mostly we deal with only DC circuits. I bought this pioneer for cheap and it powers up and can here noise through the head phones. All the fuses test good. The protection relay clicks when powered up although sometimes it takes a while. I have no audio output. I have a nice fluke meter to test with and i am looking to get some help on where to start.