I have had this set for approximately 4 years now. A couple of weeks ago my blue convergence went array and I was able to fix it in the user setting on the TV. Well now it went array again and i'm unable to fix it, the crosses just won't line up. Ive done a lot of research and I'm considering removing the back panel to see if I notice anything out of the ordinary. Is there a problem with this set that I will need a service tech to fix or is it something I can do on my own?