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In the Zenith vertical section there are two items that look like 3 legged disc capacitors. One is called a vertical integrator (Zenith 87-4), the other vertical feedback (Zenith 87-5). They are found in all Zenith roundies. Each has its own color dot. The one that causes the most trouble (I've forgotten which one) causes the picture to pull up from the bottom.
I always replaced both of them.
If you have a plastic cloverleaf (the thing that holds the convergence coils) be on the lookout for a replacement. I always replaced it.
Last edited by reeferman; 03-01-2023 at 11:54 PM.
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