Do you know any Tv repair people that might be able to look at it? DLP light engines don't look too complex to fix as long as the chip is fine.
http://www.optomahometheater.com/howto/b2_1.asp
Seems a lot of problems with this type of tv.
http://www.fixya.com/support/t224933-light_engine
http://www.ripoffreport.com/reports/...Off0275629.htm