Ok i know I have a convergence problem. There are 5 dials on what seems to be a convergence adjuster, they are labled vcr, yhc, yh, yv, yvs, this is on the NEC Multisync xp21. I dont know what the dials do as adjusting them doesn't accomplish much. When i tap the board that these dials are mounted to I can make the problem go away but only for a couple of mins before it comes back. What can I do to fix this and what are the dials used for?
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