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I got one of these a couple weeks ago. Mine is the variant with the gold faceplate. I only just recapped it this evening, and gave it an initial powerup. I got a nasty buzzing from the HV cage, and saw the 1B3 was giving off a purple glow-you could almost watch the electron flow, like when a fluorescent bulb is going bad. I suspected the doorknob cap may have been bad, but I swapped 1B3 tubes and HV came up to about 10KV, which is pretty good for the 10BP4. I still could not get a raster, and found the audio was weak. After some quick checks, I found some of the B+ was low-about 100v in areas that should be receiving 300. This set still has the original selenium rectifiers, so I'll be digging into the power supply next.
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