First of all how old is your plasma TV?
Do you have any idea how many hours the TV is runinng since new?
Red or Green sparkles on plasma TV cause by an aging Plasma DIsplay Panel (PDP) and sometimes you can get rid of it temporarily by adjusting the Y-sus & Z-sus voltages but it won't last and it will show up again.
To get to the point...your TV needs PDP replacement.
Good luck!
Usually the Z-sustain board takes care of that problem, however, I would have a svc center take care of that issue. Not to bad on $ to repair.
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