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Started looking at resistor values in the sweep and sync circuits, and found a bunch that have drifted pretty badly, some to almost double their nominal value. Have to place an order for some of the 1W units, as I don't have on hand.
HV now measures 8.5 kV with zero brightness, about 7.2 kV at full brightness. Haven't dug into the HV cage to clean and check the 1B3 socket resistors yet. Schematic says 8.5 kV is normal. Any input on the advisability of adding a B+ fuse in the horiz output circuit?
May try injecting a substitute IF signal at the tuner output. Did the EPROM mod so my VA62 should work for these sets, although this is the first actual test. I assume 21.25 MHz?
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