21ax gassy or bad 3a3?

[Electronic M]

Originally Posted by old_tv_nut

I have no idea, but I'm not surprised. Running without the yoke doesn't seem wise, as the system is tuned to resonate one half cycle during retrace with the yoke connected, and it's hard to tell if disconnecting will put less or more stress on the horizontal output and damper. I think it would be worth the effort to make extender cables.

I agree. As someone who has run a CTC-15 without the yoke I can say that it will loose more than half it's HV without the yoke connected (and that should approximately go for the CTC-5 too). Like o_t_n, and I said earlier the yoke is part of a tuned circuit (the horizontal stage), so do not expect it to work correctly without the yoke.