I wasn't able to find enough Zenith 22-5001 Safety Caps at the moment so I replaced them with Panasonic ECW-H16182RJV from Mouser. Polypropylene, 5%, non-inductive, high frequency circuits, flame retardant. Its getting harder to find capacitors with longer leads. All 3 capacitors in my set were originals as is the 212-139 Tripler and the 63-9012-02 Focus Divider. All three of the original safety caps measure 200-300pf high and no leakage. All 3 of the new Panasonic caps measure right at 1800pf (.0018uf)
A couple of signs the set has been worked on, the horiz hold stop has been clipped off, and one of the plastic pull strips was missing from under the 9-57 Horiz Module, laying off to the side of the chassis. One of the power supply diodes is different than the other. Missing one of the chassis to cabinet screws. I'm pretty sure this is a 25DC56 Early Production.
I followed Zeno's advice:
1- Replaced the 3 Safety Caps
2- Measured from the HOT to ground, no low resistance, HOT, damper, and both boost diodes test good. Low voltage diodes test good. 24v Regulator tests good. B+ rails look good.
3- Removed the HOT screws and brought the set up to about a 60v line. Sound came up right away. I let it run for a couple of hours. Screws back in.
4- Brought the set up to a 117v line. HV came right up to 25kv. Only a dull raster, no snow. Turned out to be a very dirty Set-up switch. No amount of flipping back and forth could get it to go into either set-up or norm. Finally had to clean it with DeoxIT.
I realize I could have just plugged this TV in but I would like to take my time.
I appreciate all of your advice!