Anybody remember my RCA Victor 6T74?

[Chad Hauris]

I would check for B+ voltage through the damper tube and flyback...remove the top cap from horiz output tube and carefully connect the voltmeter to the disconnected cap lead. If the flyback/damper are passing voltage there should be the B+ voltage present there and this means these components are likely OK.
If this checks out then check for a signal from the horizontal oscillator, check negative grid voltage at the HO tube and plate voltage at the oscillator tube etc. Also there is usually a damper fuse in this age of set so make sure that is OK too.
The horizontal output stage/flyback need to be working to develop the boost voltage.

[Bill Cahill]

Been there, done that. Flyback checked shorted on flyback checker. I found one that barely checks in the green. I need a new flyback. Anyone got a new Fly 45 they can spare???
I simply replaced bad dampter winding with a new hv insulation 6.3 volt, 1.2 A transformer someone kindly gave me.
All B+ resistors check good. I may also need a new yoike for this set.
They used this set to death. Right into the ground.
Out of 21 tubes, I also had to replace 10 tubes, and picture tube...
I did get audio reception this week on 3' of wire. Channels 3,and,something on 12 came in.
Bill Cahill