Rear Projection TV Problems

I have a Mitsubishi model 65819 rear projection television.  Recently, the picture has ghostin?, red green etc. outlines around the rimary image.  When I go to the convergence adjustment in the menu, the red green , etc. lines are all out of adjustment and I can't reset them.  Once in awhile, the image returns to normal, but not for very long.  Is it the convergence board(s) going out?  If so, what does this normally cost to repair.  The televsion is not 5 years old yet.