Yeah, I'll check for any obvious catastrophic failure, check the CRT, etc.
I'll then pull the 5U4's, plug it in and see if the Tubes light. Then, at least, I know the transformer is ok.
I work only on very early TV Sets, made before 1950. Back then, they habitually checked Tubes first, because the likelyhood of a failed tube was greater than a Cap or a resistor. Now, it's exactly the opposite. I replace ALL Electrolytics first, with values at or above spec. Then, I replace ALL Tubulars and ALL Micas. Then, I check ALL Resistors with values above 500k, and all Wire Wounds and Controls. Then, I check the Tubes. Anything suspect, or out of spec, goes.
Then, I do Resistance Checks through the Pins.
THEN, I power it up and check pin voltages, etc.
When you do all this, it greatly cuts down on surprises later. It also greatly increases reliability, and greatly reduces the probability of catastrophic failure, because with the Electrolytics new, and the Ballast operating, anything marginal WILL fail, sooner or later. THAT would increase the probability of taking out something made of Unobtainium, like a Flyback.
LJB
