Mitsubishi WD - 52527 Optical Engine HELP!!!!!

Try www.shopjimmy.com as they may have the parts you need.

That's called the PBS Array, for Polarizing Beam Splitter Array. This set is one of the few models of 3-LCD rear projection tvs that Mits made. This is nothing like a DLP. Mits doesn't sell that part for the internals of the LE, Panasonic is the only vendor I know of that sells internal parts, and you wouldn't like their prices.

The good news is that any 3-LCD rear projector tvs will have that part. Any Sony that's NOT an SXRD, any Panasonic LCD rear projection, any Zenith E44 or 48, any Hitachi LCD rear projection, any other Mits LCD rear projection. These don't generally burn up even in Mits, I've never seen one burned in other models.

Check the polarizing input filters, they are the three things that stayed with the light engine lid. Don't remove them from the lid because they are set at precise angles. The one in the blue channel sometimes gets fried. Don't take it apart any further!

I can't tell what it is that you said is yellowed. What did the picture on the tv look like before you took it apart?

Search Craigslist for a cheapie 3-LCD. Sony's WE610 series tend to be dirt cheap, esp the 42".

Any rear projection LCD that's not an LCOS/SXRD/DiLA.

The one in my old Sony measures 2" x 2". It's a WE610/WE655/WF610/WF655 family. 2" x 2" is a common size in optical components.

I can't tell if the one in your Mits has the corners knocked off or if that's just the plastic frame. Sometimes the mounting plastic frame will have differences. It might just drop into slots. Don't try and cut the PBS Array, it's made of many long thin prisms made of tough glass glued edge to edge. Just get it in there somehow with the plastic strips on the same side as in the Mits. It's precise location is not critical because it's not a lens. Keep the shiny aluminum grating together with the PBS it came with and in the same orientation.

Best to look for an old Sony, they are very common and cheap, and I've never seen one of those burn up in a Sony.

You might also find another one of whatever is turning yellow.