Discovering a Sony STR-DH750 A/V Receiver - Part 2: Inside

In the first part of this series, I discovered that a Sony STR-DH760 A/V receiver I had bought at an estate sale has some problems, notably in its display. In this second of a three-part series, I test some of the receiver's other functions and take a look around inside it. In the third part, I will attempt to repair it.