Originally Posted by d3193
Thanks very much. I suspected a cleaning was in order, but did not know how to go about it. The link is especially useful. I will try today.
It took most of my Sunday afternoon (many of the screws are deeply recessed and, after some eleven years, firmly stuck in place). Unfortunately, the link shows how to clean the 3000 model, and the XBR1 is significantly different - the speakers are side mounted, not bottom mounted.
Somehow, the bottom mounted speakers of the 3000 allow the bottom of the front of the TV to be removed. I was not able to find any way to do that with the XBR1 (I have the Owner's Manual, but not the Service Manual - so no guidance there). I took out all 16 screws at the back of one of the side speakers, hoping that might be the key, but could not budge the speaker, so I don't know whether or not that would have helped.
Eventually I was able to hinge the front of the TV forward, carefully holding the screen so that it did not fully pivot down and break whatever was still holding it in place. I could see the mirror on the back and the optical block at the bottom, but that's as far as I could get.
I am assuming that the mirror is not front silvered, and therefore can be cleaned without damaging it. But I did not try to reach inside (this was already a two-person operation).
Fortunately I was able to re-assemble everything, and it is still working as before. An excellent, but somewhat dim picture.