Hi Jon, I restored a GE 805 - very similar to your GE 800 -- about 2 years ago.
It was a fun project and these old GE TVs are super performers with very
nice video.
I would recommend you remove that Selinum and old Diode and replace with
1N4007 rectifiers and a 5 ohm high wattage resistor in series.
Here is my restoration thread:
http://antiqueradios.com/forums/view...p?f=3&t=189602
And, I recommend reviewing Tom Albrecht's notes about these TVs at:
http://www.radiomuseum.org/r/general...locomotiv.html
http://antiqueradios.com/forums/view...p?f=3&t=190884
You can download Schematics (Riders TV4) here:
http://www.earlytelevision.org/tv_sc...s_postwar.html
Carl