This is a follow-up to my post on Mar 11, 08 (#2068). After calling Executive Customer Relations (see my previous post) on Tuesday (03/11), a service tech called me on Wednesday (3/12). We discussed the problem and he said he wanted to replace the entire light engine (LE), not just the light tunnel. He said the LE was much easier and quicker and that a light tunnel replacement was a "pain" plus you had to slide the LE in and out a few times to adjust the screws on the tunnel to get it just right. He also said there were dust issues with replacing the just the tunnel. He told me he would request a LE and see if Samsung approved it. The tech called me back a few minutes later and said the LE was approved, but that it was on back order and he had no idea how long it would take to arrive. On Satureday (3/15) the tech again called and said the LE had arrived on Friday via two day shipping (so much for being on back order!!) He wanted to know if he could come out then to do the replacement, to which I agreed. The swap went without problems. The part number of the replacement LE was BP96-01640C. He assumed it was a refurbished unit but I read elsewhere in this thread that rebuilt/refurbished units have an "R" at the end of their part number. Perhaps this "R" information is not standard? Perhaps I received a new unit? At the moment, everything is working fine. Hopefully I won't have any problems with the replacement LE. (I have read here that many people do have problems with failures after only a short period of time). So far, I've been one of the lucky ones in my dealings this time with Samsung. All I can say is call Executive Customer Relations and don't take "no" for an answer (or talk to Courtney--she was awesome).