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Here's a quickie; assuming you have the white balance & purity in decent adjustment (OK black & white picture except for colored ghosts):
If you don't have a color bar/pattern generator, connect a cable or SAT to the set, and receive the program guide or something steady with white lettering.
Turn the color all the way down, and adjust brightness & contrast for visible but not blurry white characters.
Looking at the center of the screen, use the 3 slide magnets on the neck of the tube, to converge the 3 guns (also the blue lateral magnet to move the blue straight left to right). The blue slide magnet only moves it up & down). Don't mess with the purity rings (two thin metal tabs on the neck of the tube) at this time.
Once you have the general middle of the screen converged, then you can touch up the edges with the 9 controls and 3 coils on the convergence chassis. I think on the Magnavox, you can flip it up and mount it so you can reach all from the front, as trying to do the fine convergence in a mirror sucks eggs.
Feel free to repeat the whole thing a few times, as practice makes perfect ;-)
***Beware of high boost voltage on the terminals of those slide magnets, if exposed. I don't think Magnavox has it exposed, but it's good practice to assume it does...
Charles
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Collecting & restoring TVs in Los Angeles since age 10
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