I found this at the flea market on Sunday. The seller had powered it up but could only get sound. The 10BP4 showed no emission when I first tested it. I let it cook at 8.4V on the tester for a few hours and emission came up into the green but dropped back down into the red when I set it back to 6.3V. At least it seems to be waking up. I brought the set up on my variac and could draw an arc from the plate of the 1B3 but can't get HV out of it. The filament resistor was open so I tacked in a replacement but that still didn't get HV. I think it's a pretty cute little set.
