Audio gear - Heath AR-1500A that still runs hours a
day (although it needs another change-out of pilot
lamps AGAIN! A set, it turnms out, lasts about 2 1/2
years in this service cycle with the last bulb left
standing then out at about the 3 year mark) ...

(AR-1500A a 70's era AM/FM integrated tuner/amp
 that I picked up 'at the factory' ... the AR-1500A
 was derived from the popular component set before
 that - the Heath AR-15 series,  output power: 60W
 RMS/channel continuous.)

This same amp blew a PS bridge rectifier and a transistor
or two during a "loud passage" (I had it cranked open)
a number of years ago - owing to a pinhole punched through
a Mica TO-2 insulator caused by a small burr on the power
transistor heatsink ... it took that LAST loud sound
passage, though, to finally cause things to terminally
'breakdown' ...

RF Jim

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