It seems no DLP TV manufacture is immune to bad 'Light Engines' since they don't want anyone trying to repair these in the field. The manufactures have gone out of their way to keep this information secret as even their service manuals have very little regarding the Light Engine itself other than block diagrams and maybe a few photos. Some of the earlier SMs' did show some closeups of some of the parts (the color wheel for example), but all those SM entries regarding color decoder alignment have always been missing.
This gets one wondering just what happens to all these 'returns'. I assumed
they were either repaired here, or the troublesome ones were sent back to Asia, again assuming the assembly was built there instead of Mexico where most of these sets are 'assembled'.
With thanks to a poster in one of the Mits threads (Texas_Joe), he supplied these links for a company that is a 3rd party repair/rebuilding facility for these DLP Light Engine assemblies called Hong Video Technology
A press release, news article is here;http://www.send2press.com/newswire/2...0108-005.shtml
I did a quick search and found this also;http://enewschannels.com/2007/07/11/enc1577_193723.php
Hong Video Tech Surpasses 10,000 DLP Light Engines Repaired
That isn't a small number.
Of course the question now is, just who uses their services??
My thoughts would exclude larger companies as Sansung and Mitsubishi. Another poster claimed Mits does not
use them. Then Toshiba came to mind, while being a larger company, I do know they farmed out their Plasma TVs' to another company and I then thought, that might make them a canidate for this rebuilder. Guess I was right;
HVT pioneered a reliable DLP light engine repair process for Toshiba in 2005, and today repairs six of the most popular DLP light engines used for DLP televisions.
That was taken from the 3rd link above.