I'm not 100% sure if i'm in the correct forum, but hopefully someone can help. I have a 2 year old samsung sp42 rear projection tv. Suddenly I have acquired a serious convergence problem. The screen is showing a huge shift in the magenta , green colours and will not setup if i try to re-allign with the remote. Is this a common fault on samsung rear projection? Can it be fixed easily? Your advise is much appreciated.