Known problems: One of the four channels was found to be not working. Most controls are scratchy and could use a squirt of Detox. Cabinet and face are in fair condition. Modes of operation available: QS Synthesizer, Surround, QS Regular Matrix, Hall. Phase Matrix, Discrete, 2-Channel. All except one lamp appear to be working. There may be other problems I am not aware of.
At request I have added a photo of the interior of the receiver. While I had it opened I checked the fuses at the upper left. The two leftmost fuses are blown -- reason unknown.