Quote:
Originally Posted by Kamakiri
Access plate on the bottom on mine is missing, so it's an easy check 
What's it look like? |
First, Horizontal Efficiency is stamped into the chassis on the control pot mounting flange near the end where the high voltage related tubes, cage etc. are located. There will be an obvious adjustment there which is actually horizontal linearity. Evidently "efficiency" is just Zenith's pet name.
So if you are looking at the adjustment end, then the business end is just behind the chassis steel. You can reach in from underneath and gently give this coil a feel to see if it is rigid, or if the winding portion which points straight out toward the front of the chassis is loose or "wobbly" as I call it. So, it is something about a pencil's diameter which is the adjustment shaft coming from the inner wall of the chassis and protrudes out a couple or three inches to a thumb sized winding.
Again, be gentle as the plastic in some of these old sets can fall apart pretty easily. We don't want your set to have a new problem! On the flip side, you need to know the condition of such things yourself. More than one person has told me that if this coil is indeed messed up, then you are looking at the H.O. plate (I think) or grid current problems that haunt these old color sets.
Anyway, let me know what you see, or feel, in yours. I really appreciate it. I once had a box of yokes for these sets that I had junked, but they are long gone now. Wish I had them; I would send you one!