6 year old 50" Maxent Plasma, first problem

I have a MAXENT that has just started having this problem. When I power it on, it has random flickers around the screen for about 30 seconds, then it calms down. On random channels at random intervals, the right side of the screen will flash what appears to be an inverted or modified image, but not on the left side. The unit is also getting surprisingly warm. IT is worth the trouble to try to fix it, or does anyone have a suggestion on how to fix this?




This is not my image, but is exactly what...