i recently picked up this 2270 and like everyone else here wanted to see what the insides look like. I take the 4 screws off, lift the cover and am blown away with just how clean this one is. So I’m thinking “there is no way this hasn’t been messed with. Someone had to be in here before”. So could someone tell me by the pictures if this is all original Marantz parts or are there new parts in here and who ever installed them cleaned thing up. Thanks! Buy the way. It’s as clean on the outside, plays great and everything works with no odd sounds or scratchy pots.