[chalupa13]

I just took one apart on Philco 77. I think those are identical to 76. The bottom is tar and then the rest of the block filled with paper/foil-wrapped caps. I pried them out with a screwdriver. Pull one from the middle using long tongue pliers and the rest will come out easy. I replaced 2mfd with 4mfd electrolytic caps I figured more filtering won't hurt. I believe the rectifier tube is 80 and it can handle up to 20mfd filter caps. The voltages on those caps are around 350v at least on mine, so definitely get 630v rated caps. There is so much space inside that block you can mount new caps anyway you want. The spacing between terminals is so wide that most caps won't have the wire length to reach them, so I soldered wires to the terminals and then soldered caps to those wires and used shrinkwrap tubing on the solder joints and exposed cap wires. I already tested the radio and everything seems to be working fine. Here is the diagram of your B-Cap. I marked + and - terminals for electrolytic caps, regular caps will be too expensive in those capacities.