Here's a couple pics I snapped of the back of the TV with the cover(s) removed, after blowing away most of the dust inside it.
It doesn't seem overly complex, at least concerning the electronics board. Perhaps these pics will help somebody identify what exactly I have.
On another note, I can't see the image on the screen in daylight. Is this a fault of the TV, or is it the same with other rear projection TV's?