Fully working it is worth maybe $25 as a tv/monitor. Might be worth
$50 to a collector of old technology for a museum collection
There is a market segment that really likes these things. I could probably get
about $200 for it. They got good servicability as long as you don't need
proprietary parts, and are quite reliable.
I actually sold one of those old Advents for $600 in about 1994. Of course this
was one of the few with good geometry and convergence. Looked good. It was my
set for a while. Yup my house was the movie watching house, had an old
quadrophonic Marantz reciever feeding slave amps to the tune of about 500
watts. This was fed by the hifi VCRs because the Advent wasn't stereo.
When ABC carried the Monday night football they used to mix the crowd noise
into the rear channels and you would hear ALOT, if ya know what I mean.
Actually I had it setup to run the rear channels off the surround only from the
TV signal and switched the front amp over to tuner and listened to the radio
audio. The announcers are way better on radio.
The Advent gave way to a pre 9-700 based Zenith which still lives.
If you think that's liking old stuff, to this day I use a Sansui 771 as a main
amp. I can't believe it still works, talk about overbuilt ! It's pushing it's
approx 70V P-P into 2.66 ohms. Do the math, that's over 200 WPC RMS. Well it
was until I changed the voltage select to 100V (I guess it's a PX model ?).
Thing just won't blow up and force me to build one. I'd have to build it, my
speakers are perfect for this room and I ain't changing, and I havent seen many
moderate power amps that can run into 2 ohms (200 watts is moderate for an amp
that can run into 2 ohms).
I know of a shop that had the motor kits for those Sony's up until the
early-mid 90s believe it or not.
Unfortunately the OP is going to have to dismount the mirror for transport and
put it back when it gets home, but I think someone might cough up at least $100
for it.
JURB