06-25-2011, 09:53 PM
Looks like there is a bunch of them in with the filter condensers. That small metal box is probably the filament bypass caps for the 26 tubes. It would be connected across the hum pot. It's been a good while since I've been inside one.
I just got a model 20 console, going to go get it on Monday. It has a similar set up with the filters in a tar filled can. Once you figure out how everything is wired up inside it an easy job to get it back together, just messy.
I'll mention in passing that your 87 uses triode tubes for the rf amp. If you replace the 26 rf tube it will require the re adjustment of the neutralization trimmers. It's a bit of a pain so don't dittle with them.
Terry
I just got a model 20 console, going to go get it on Monday. It has a similar set up with the filters in a tar filled can. Once you figure out how everything is wired up inside it an easy job to get it back together, just messy.
I'll mention in passing that your 87 uses triode tubes for the rf amp. If you replace the 26 rf tube it will require the re adjustment of the neutralization trimmers. It's a bit of a pain so don't dittle with them.
Terry
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!
Terry
