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1st power up
Finally got the rest of my electros installed, and hooked up the variac for a power up. No ammeter hookup, so watched carefully...at about 75-80Vac on the line, I started to get some audio, so dialed up to 90, and noticed the plate of the 6DA4 damper tube starting to glow a bit red, so I shut down, and did some checking. The flyback was 1st on the list, but all the resistance readings are right on with the expected values. Tube tested the 1B3GT, and not great output, but in the low green, and no apparent shorts. I had already replaced the resistor to the HV of the CRT, and all the associated caps have been replaced, and resistors nearby checked as well.. I also tried with the yoke plug disconnected as well...same result. I checked B+ at 70V line input and was getting about 225V, so that seems about right. (no raster through any of this)
Seeking sage advise as to Where to go from here??
(Could I do any meaningful voltage checks with the damper tube pulled??) VOT ??
Last edited by bonanzaman; 05-17-2014 at 09:24 PM.
Reason: late thought
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