Also, one of the rubber wedges mounted between the CRT and the yoke may have
fallen out (probably lying on the circuit board); this will allow the yoke to
flop down or sideways about 1/4 to 1/2 in, screwing the edge convergence. If
this is your problem, just shove the rubber wedge back in and glue it to the
CRT with some silicone RTV.
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