Any post war Television Repairmen here?

Yea find a Sams if possible as Bobacuda said.

If the screen is black and the tubes are lit, next check is for high voltage. That is done at that cap attached to the side of the picture tube. Not sure what the voltage is on a set that old and a pix tube that small. Big '70s sets could be 30,000 volts or more. Be careful, there is a special probe to use that slides under that cap. You want to start with high voltage because those components are the most expensive. Once all that HV stuff, and the pix tube, is verified good, the repair is probably downhill from there. Worst possible case is the big transformer for the high voltage, called the 'flyback transformer' is shot. They would go bad all the time when I was doing this work. Finding one of those may be difficult. There is a big diode in that circuit to look at too. I guess it would be a tube in a set that old.

If there is no crackling or static, the HV is likely out.