I'm with cdnscg, unless you have some kind of sentimental attachment to your SXRD, get rid of it and buy something else.
It would most likely cost you more to find, buy and have installed your optical block than getting a newer set, and it would be a HUGE improvement. I've loved my SXRD for years, but even my "budget" TV (Vizio P-Series) is a night and day difference in picture quality in comparison.
I've kept mine, mostly since I still have an original and unused Sony lamp and because I have no idea how to get rid of it (and that massive stand) easily, but it's going to the dump the next time I have to move or need the space for something else.
Anyway, good luck with your set (or hopefully, new purchase!)