Starting a Restoration on a 1951 RCA 7T111B

[Notimetolooz]

Originally Posted by Aperna1985

I don't know how to check frequency, is there a way without a scope?

Without something on the TV screen it is hard to estimate the horizontal frequency. A scope would also show the wave shape which is useful.
You don't need a scope for AM radios but working with TVs they are handy.

I don't suppose you have a frequency counter. I've never used a counter for that purpose but there may be a way to use it.

The fact that you got flashes of light on the screen when you changed a switch suggests the HV doorknob cap is OK. Also didn't you say you got a zap when you got to close to the side of the CRT? That would also suggest the cap is OK and there isn't too much leakage at any place else.