[NostalgiaRadioTime]

Here's a new one I never encountered before. Working on the Zenith model 8S463 I picked up last weekend. It's been recapped / (most) new resistors, all carefully installed. Checked and double checked. The radio plays, albeit a bit garbled. However when I plug in known good, bright green 6U5 / 6G5 eye tubes, they don't light up green at all! I can see the filament lit bright orange, and the voltages are there on the eye tube socket plug, but no green. It's like a dead eye tube. I take it out, test it in the tube tester, and it shows bright green. Any ideas what would cause this? I have a new 1 meg resistor across pins two and 4.

Here's a link to the schematic:

http://www.nostalgiaair.org/pagesbymodel...025455.pdf