[okney1lz]

Hello to everyone on the forum! This is my first post.

I recently acquired a really nice 46-480 off Craigslist. The radio was working pretty good when I arrived to pick it up, but I am planning on recapping and aligning it.

I've started scrounging around for information and still have a couple of questions before I get started. Here goes!

1. The first I.F. Amp tube (6SQ7GT) has a metallic shield surrounding it, right behind that is the Disc/Det. (6H6GT).The Disc/Det tube has two metal tabs sticking out from underneath it, is this also supposed to have a shield?
2. The schematic shows a 5 µF 50V capacitor acting as the "Disc. Bias", this is number 1 in my photograph. It appears to be a paper capacitor. As this value is proving hard for me to find, is alright to substitute an Electrolytic of equal value and working voltage so long as I observe circuit polarity? The actual schematic has the polarity labeled, but it threw me off when I discovered it looked like a paper and not an Electrolytic.
3. The capacitor labeled No. 2 in my pic is a .006 µF 1000V, I cannot reference this on the schematic. There's nothing I see with that high of a working voltage. Is it okay to replace this with a 630V axial film Capacitor?

I think that's all I have for right now. I appreciate any input or information the forum can share!

Thanks in advance,

Lawrence

[Radioroslyn]

Hi Lawrence and Welcome!
#1 Depends if your 6H6 is a metal tube (most are) pin 1 is connected to the metal cover over the tube. Pin 1 is usually connected to the chassis thus making it shielded.
#2 Electrolytic is fine. I suspect that the original is an electrolytic in a paper tube. If it's C-43 off the plate of the 6H6 it is. Mind the polarity and you will be fine.
#3 Suspect that cap is hooked the plate pin of the audio output tube. Some set will have a 1000v cap there. what there thinking is that the voltage developed there which is B+ + the AC audio voltage will be higher than 600v. I doubt it. Should be fine with a 630v job. If it worries you tie the bottom end to the screen.
Terry