I want to fix my optical block please help!!

[Pvbj]

I have an HD-52Z575, JVC, D-ILA projection TV that was getting dim so I took it apart to find two (2) severely burnt filters that through much investigation believe they are referred to a G/M filters. I believe all would be well with the tv if i had these filters, but without any specification there is no way that I know to identify and replace these filters, I also would like to replace what I understand is called the polarizer. Both of these items are in the light path just before the input of the D-ILA unit.

If there is anyone that is intimately knowledgeable in this design please help me identify these filters. I believe I can source them through a company called "Edmond Optics" if I could describe them.



Thank You

 

[jostenmeat]

I don't know man, but maybe there is something inside this thread to help you figure something out . . . .

Just what's inside a JVC D-ILA?

Oh wait, you said just before the D-ILA input. Oops. However, I think the diagrams are indeed from the HD-52Z575, and maybe one of the many diagrams can help you narrow something down. I'd also try contacting JVC directly, as they will know best, I assume.

 

[Pvbj]

Thanks for the reply,
It's actually pretty cool; basically after the lamp is a mirror then two of what I believe are Integrator lenses, then two typical type lenses i believe are condensing lenses, then a polarizer, then the two plastic pieces that I believe are G/M filters. The D-ILa units is fascinating with the first prism that has a reflective coatings that allow red and green to pass but blue bounces off and is directed into the blue device then the green that passed is reflected with another coating that bounces it into the green device then finally the red that passed through the first two goes directly into the red device and as it exits is bounced off another mirrored coating and all three exit as projection light through the projection lens.

Unfortunately this technology is obsolete in projection TV but still going strong with projectors. I assume it's similar if not identical for both technologies.