Video Problems: Convergence Fluttering or Pulsing

On occasion a fault will occur in the convergence board, especially the older 800 and 801 sets that will cause the convergence test grid to pulse or flutter. Some parameters will not work, or work in a strange manner. These problems are almost always confined to the convergence board itself. To test if a convergence board is causing strange actions, turn the set off and pull out the convergence board. The set will now work without convergence, and any anomalies that the convergence board has injected into the image should now be eliminated.

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