Shit happens. More than ten years ago I had two dead in the box Yamaha receivers in a row, the only ones I've EVER had. The rep was wondering what the hell I was doing wrong -- and he had known me for fifteen years at that point -- but after those two, I haven't seen another failure,

Yup, stuff mysteriously goes bad. It happens.

buzz's insight on power supplies is pretty good, too. He's DEFINITELY right about the low cost of the power supply!

An important thing to check about the power supply is its voltage when it's connected to the equipment. To get this, we'd need to have a power Y cable so we can connect the device and still connect a voltmeter.