help my TV

My TV seems to have a problem that I have seen periodically in older TVs. When my TV displays a block of red on it’s screen it will sometimes have green pixels scattered through it. Can anyone help me?

I searched the a.s.e Repair FAQ for TVs and the closest I saw was this. A gain control problem. Not user fixable unless there is an easy to get to gain adjustment on the back of the set.

But try the user color adjustment procedure first. You may have the brightness set too high or some such.