66 zenith high voltage dies after 30 minutes

[ctc17]

Originally Posted by TV Engineer

The "2 turns of heavy wire" on the flyback for the rectifier filament has been know to leak HV to ground. The result is exactly what you describe, and I have seen a few times before. You would think you'd hear it arcing, but usually not.

Replace the HV rectifier filament winding. I'd bet that cure the trouble.

Thats interesting. I think the previous owner was a smoker and there is a lot of cigarette juice on anything hv. The hv rectifier was totally dripping wet with the stuff.
I cleaned most of it up because it was causing everything to leak and hiss, thats the one wire I cant get to without removing the flyback.

[wa2ise]

Originally Posted by ctc17

Thats interesting. I think the previous owner was a smoker and there is a lot of cigarette juice on anything hv. The hv rectifier was totally dripping wet with the stuff.

Yuck, Imagine what his lungs look like... That crap probably has been absorbed by the old HV wire insulation and cannot be cleaned out. A source of suitable HV wire can be had from junked computer CRT monitors.