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Your board looks good. On mine, I pulled the whole thing, replaced every single cap and resistor (which is excessive, I know) hooked it all back up, and powered it up. The set ran like new!
I probably would not have rejuvinated that tube-I typically set the heater voltage a little higher, about 8 volts, and then let the tester cook away at the tube for a few hours. The emission almost always goes up. Rejuvination is very hard on crts (on all but the most expensive testers, it is usually just a fat cap discharging itself into the crt gun) and in some cases will totally trash a perfectly fine crt.
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