Zenith System 3 acting up

[Jon A.]

Originally Posted by TUD1

I watched the set again today with the Color Sentry ON, like I usually do, and the problem was not present. I wonder if it only happens when Color Sentry is OFF?

Not necessarily. As I re-cap my Electrohome, the random picture dimming problem hasn't yet gone away, it just happens more randomly. The "Auto" button often helps when it's at its worst.

Whatever the cause is, I'm going to be having a solder fest at the CRT neck board as part of the restoration.