Beyond the list of standard restoration steps detailed on the main page, here are some added notes for this unit :

I bought this from someone local on ebay.  It was reported to “blow fuses” and was priced accordingly.  Cosmetics were very good.

Initial inspection showed no signs of abuse/damage.  One area of the power supply showed accumulated heat effects under a fuse resistor (not too bad).  The fuse resistor was out of spec and replaced along with other known-problematic transistors on the power supply.

Power on testing (using a variac and dim bulb tester) confirmed DC current draw (dim bulb tester bright at only 30VAC in).  Found 1 of the 4 output transistors had failed (emitter/collector short).  All 4 output transistors replaced for matched behavior.  “Replace on sight” transistors swapped out on main amp board and other devices tested good.  Power up now successful and amplifier DC offset/idles set to spec.

Able to now perform initial functional testing which showed that FM stereo was not working correctly.  Tracked this down to a dirty function switch contact that sends power to part of the tuner only when FM modes are selected.  Cleaned that (and all other switches, pots) and FM stereo sounding very good.  Also noted that AM is dead.  This is due to a faulty AM bar antenna.  The Yamaha rod antenna is “4 wire” (vs common 3-wire) and rather expensive.  I am leaving this as is few (any?) folks care about AM these days.

Recap went smoothly.  Thanks to Yamaha engineers for designing in some nice access capabilities.

Functional testing complete/passed.  The tuner really performs well (sensitive and dynamic sounding).  The amplifier delivers Yamaha’s “natural sound” which is very clean and accurate.

The cosmetics came out nearly perfect.  The faceplate, dial and knobs are very clean.  The only caveat are some small spots where the veneer flaked off the thin surface of the cabinet framing the faceplate.  Stain was used to match the color in those spots making them hard to notice unless looking very closely.