1966 Zenith 20X1C36 failed vertical output transformer

[Dave Drez]

Hello all!

I'm happy to say that I was able to successfully find a Thordarson replacement vertical output transformer for the Zenith 20X1C36. It was for sure a lucky, random find from an electronic surplus company on-line.

I installed it yesterday and was happy that the set started up and the convergence circuit worked as it was supposed to. HOWEVER... the vertical linearity was way off. The top of the raster is stretched and the bottom is compressed. I can adjust the vertical linearity control but it has no effect adjusting the linearity. It has a great effect that is identical to the vertical height control. I am concerned that when the transformer failed, something else was damaged. I tried changing the tubes but that's not it. I've been looking for a bad cap or resistor, but no luck.

Does anyone have any ideas?

Thank,

Dave