Facing TV Problems? Ask a TV Technician.
Faulty colors can be caused by memory errors also. A 'color' is represented in memory by numbers. Memory error would change number, thus changing colors.
Admittedly I am not certain.
I feel uncertain enough that, given that you want certainty, I feel I should Opt Out of this case, and open it thus to other Experts in this category. I'm sorry I had nothing more to offer (but, be it noted, that Main Logic Board was cheap enough at about $40 that it is much less risk than I expected to swap out. I was expecting the main board for your plasma TV to cost more like $130 or a figure in that range.)
Hi I'm tech Mike and I will help as well if you get stuck.
I see tech Long Term has oped out.
Let me know if I can help you further ;-)