In reading through the vast knowledge base of the forum, I've come to the conclusion that blue polarizer burning is one of the most common failures (other that lamps) for projectors.
For my Proxima DP6800 (a.k.a. Hitachi CP-X950), I've become the victim of the yellow spot condition.
I've spent several weeks trying in vein to find a replacement filter, but no joy. The best I can find from Hitachi (forget Proxima) is that they only sell the complete optics engine for $450.00. Not quite palatable for an XGA projector.
I've also read about someone in the UK adapting filter from another basket case projector with acceptable results, but this was only one instance of this repair. As for my specific projector (which is probably similar to others), the blue polarizer is loosely placed between the the light channel, the LCD panel, and the optics mixing prism.
I also know that lateral position of a polarizer is not critical, but rotational position is. However, being new to LCD projectors and its optics path, there must be a mating polarizer somewhere in else to mate with the burnt one.
My question is, as the UK repair had shown, is it possible for any blue polarizer (size permitting) to be used as a replacement (assuming that there is some de facto standard
for 3-LCD optics?
Also, is the blue polarizer film itself available from other sources, or generic blue polarizer filters available from optics suppliers?