Picked up and Admiral 20X122

[Doug66]

I just replaced the last of the resistors in the sync circuit, and no change. I even disconnected the replacement vert osc transformer and swapped the wires to make sure I hadn't hooked it up backwards.

I have checked and rechecked my work from the 12AU7 sync amp, thru the sync clipper and thru the vertical amp tube and all parts are correct. The only voltage difference is on pin 1 of the vert am. I should have between 80 nd 148 volts, and I have 44. As of now, I've done all I know to do.

[Radiotronman]

I had the same problem on my RCA 721ts I just finished. It turned out to be a dirty vertical hold control. Spray it with contact cleaner and rock vigorously from one end to the other.