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The Magnavox was a pretty good set (back in the day). I used to do warranty work on that chassis, and also used one in my home for many years. If I remember correctly, that is one of the many Phillips boards with a horizontal driver transformer that had 4 pins that came up through the body of the transformer with the winding wires soldered on the exposed top of the pins. Make sure you re-solder those connections (bottom of the board and on top) as they were very prone to cold solder joints, which usually shorts the horizontal output transistor.
The chassis in the Sears set was made by Sanyo. They were notorious for the odd vertical output board (which used to only be available from Sears). The little board is mounted on a small metal heat sink, and were very prone to failure. I douby they are available any longer. At any rate, they usually had a pretty good picture on them.
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