[Penthode]

A month ago, I returned to our old house in Carbondale to clear out some left behind items. Amongst the stuff brought back was my old Zenith. Recall I found this set by way of an article on the front page of the Southern Illinois University student newspaper, the "Egyptian". A photo depicted but made no reference to the set on a front lawn, but to a banjo player sitting on the porch. (See beginning of the thread).

To make the story short, after cleaning up the set, we moved house. I patiently waited more than two years to continue the restoration.

I thought the flyback was fried. Kevin helped find me a replacement which I was just about to install. However I had another look with the set switched on and found only the HV rectifier bad. The tube had an invisible crack and was down to air. Interestingly it made a frying sound and loaded down the sweep section enough to cause the Horizontal Output tube plate to glow red after a few minutes. A new 3AT2 and I got good sweep and a good raster. HV measured and stayed at 25kV and so I am all set! Thanks anyway, Kevin.

The photo below is the set tuned to MeTV (Rockford Files) this afternoon with only a most cursory purity set up and convergence. Shortly after the set lost color lock. I decided to do the color APC and quadrature injection adjustment when the quad injection coil crumbled in the can!

I took the transformer apart and the coil former was in bits. So my call out Videokarmaland is do any of you have a spare injection coil/transformer? (It is Zenith part S-66788 and it looks like it was used in most if not all early Zenith color sets from 1962 to 1967. Note it is mounted in a standard aluminum can and has 8 terminals).

Failing finding a transformer, a two inch length of coil former which takes threaded ferrite slugs would do. I am prepared to rewind the transformer but even the formers are hard to find these days.

Any help would be sincerely appreciated.

Terry