Testing a CTC-11 horizontal hold control

[Kamakiri]

Originally Posted by DavGoodlin

If 270 volts P-P is not found at the hold coil, the oscillator is not running. If something close is found, see where it gets stopped or attenuated.

I've got the 270 at the hold coil. There's only so many parts left here that it could be

[Electronic M]

Originally Posted by Kamakiri

I've got the 270 at the hold coil. There's only so many parts left here that it could be

Is that 270 AC like the post you quoted is looking for? If so try to follow it with a scope towards the output grid.

[old_coot88]

To tell if it's AC or not, put a cap (any random value .001 - .01 mf) for DC isolation in series with the test lead, and put the meter on AC.