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find the output from the B+ check resistance at that point to ground. will start low and as filter caps charge up from meter, eventually should settle down around 8-12k. do this with all the tubes in.
on the power up, I generally pull the horz out tube and the vert out tube, the reason being at low voltages there could be a lack of drive causing too much current to be drawn. This is largely just a guess on my part, but the assumption is the set was not designed to be run at low power, so by pulling the tubes that have the most power thru them, there should not be a problem.
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