Luck for you the problem appears (from your brief description) to be the DMD chip at the heart of the DLP engine. As such it is no different than what many Mits DLP owners have done...either have a tech do the repair, or do it themselves. Most importantly, the appropriate Texas Instrument DMD chip is available, as opposed to the very difficult to find Mits lasers.
You'll need to search some of those threads and posts, but even if you have a tech do it, it's much less than cashing out the TV, or signing away your rights. On the other hand, what are they asking you for other than confidentiality (which appears moot at this poin).
In your case the problem appears to be the tiny mirromirred DMD chip which modulates the light projected by the lasers.
By the way, Mits is returning to TV with a UHD flat panel LCD, which uses a red lase rather than the standard red (filtered) LED for illumination