i was a proud owner of a SXRD KDS-55A2000 for about 11 years. yeah, it suffered from the OB issue, had the OB replaced 3 times and replaced the lamp 3 times as well.
the third time was the charm for the OB, fortunately i had purchase the extended warranty from BB and extended it a couple of times until they no longer offered me the ability to do so. that third OB has lasted up to this very day.
i must say that i remember the first time i replaced the lamp, it was several years after purchasing it new that the original lamp finally went. as part of the warranty, BB did it and i will say this of that set, every time the lamp was replaced, it was like getting a brand new SXRD from the factory.
it was possibly the absolute best picture i have ever seen. the only thing i had ever wished of it was that it could have done 24fps. other than that, once the last and current OB was installed, its been a remarkably beautiful looking picture.
i sold it last last year as i finally decided it was time to go 4K as i waited for the TCL 6 series 65" to be released. the people i sold it to, were friends of my Daughter, they came over and watched the tv before buying it, i placed a blu-ray movie on and the Ladies Dad sat down and wanted to watch the entire movie it was so beautiful and yeah, i also had a 7.1.4 playing for the audio. His Daughter said, Dad, we got to go.
they purchased it and it has thus far been serving them well. i know it's in good hands and according to my Daughter, it still is. i also gave them a spare new lamp complete in the new housing, 3 hdmi cables and because they wanted to be able to get streaming, i threw in an old 1080p AppleTV since my new tv had the Roku OS built in.
i just wanted to add my experience with this game changing tv that i had the privilege to own. so, my best wishes to those who are still keeping their SXRD's going, KDS-55A2000 and all of the SXRD line. i must also say, with almost no tweaking at all, this had the best color/contrast out of the box i've ever seen on a tv. it reminds me of my current TCL, i've not touched the color from what it was out of the box with small adjustments to the brightness in different modes and inputs.
keep going strong SXRD owners!