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Posts referring to the Epson PowerLite 7700p

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Topic:   EPSON PowerLite 7700p - Loses signal from Roku (HDMI to DVI)

My Roku is connected to my projector from HDMI(Roku) to DVI(Projector). The signal works for browsing the videos on Roku's interface, but once a movie starts, the video is dropped completely and I'm left with a blank blue screen. Any ideas on what could be causing the issue?
Forum: Projectors
 
Topic:   Where to get new polarizers for an Epson powerlite 7700p??

I have a Epsom powerlite 7700p and it's red polarizer burnt up when it accidentally got unplugged before the fan had a chance to cool down the bulb. Where can I get new polarizers from?? Please let me know! If you need a picture let me know.
Forum: Projectors
 
Topic:   Epson Powerlite 7700p

[QUOTE=snarfer20|Apr 19, 2010 8:22:00 PM] Hi All, Im repairing an Epson 7700p. Popping the LCD Prism out and taking the LCD panels off revealed 3 "out" polarizers for each of the channels Red, Green, Blue. By OUT I mean the LCD is sandwiched between two polarizers, and the ones I am refering to are the last in the pipeline before they go thru the prism. Each of them is suffering from some burn in, the worst being the red channel (which is a-typical). In any case, all 3 could be replaced. A couple questions: 1) Does anyone here have a service tech/distributor they could clue me into to find an adequate replacement for each at a "reasonable" cost? Epson is not helpful at this point. 2) Out of curiousity - when experimenting with a typical polarizer (gray in color) in front of an LCD screen, at the specified angle it blocks nearly ALL light due to the wavelengths coming out of the LCD being polarized. HOWEVER - these three polarizers appear to block out varying degrees of RED. The blue channel's polarizer, when turned in front of an LCD, goes a nice dark red. The Green channel's polarizer, when spun, goes a dark violet, and finally the red channel's polarizer operates like a typical (to my understanding) polarizer and blocks out all light. Is there such thing as a polarizer that only polarizes a specific color band? Cheers, T [/QUOTE] Heyy I am doing the same with mine. Did you ever find replacement polarizers??
Forum: Projectors
 
Topic:   what is this piece called??

I have an old epson powerlite 7700p and I think what happened was it got unplugged before the bulb got a chance to cool down and it burnt the red colored lens right before the prism. I need to know what this part is called and if and where I can get a replacement part. Please help!
Forum: Projectors
 
Topic:   Epson Powerlite 7700p

Hi All, Im repairing an Epson 7700p. Popping the LCD Prism out and taking the LCD panels off revealed 3 "out" polarizers for each of the channels Red, Green, Blue. By OUT I mean the LCD is sandwiched between two polarizers, and the ones I am refering to are the last in the pipeline before they go thru the prism. Each of them is suffering from some burn in, the worst being the red channel (which is a-typical). In any case, all 3 could be replaced. A couple questions: 1) Does anyone here have a service tech/distributor they could clue me into to find an adequate replacement for each at a "reasonable" cost? Epson is not helpful at this point. 2) Out of curiousity - when experimenting with a typical polarizer (gray in color) in front of an LCD screen, at the specified angle it blocks nearly ALL light due to the wavelengths coming out of the LCD being polarized. HOWEVER - these three polarizers appear to block out varying degrees of RED. The blue channel's polarizer, when turned in front of an LCD, goes a nice dark red. The Green channel's polarizer, when spun, goes a dark violet, and finally the red channel's polarizer operates like a typical (to my understanding) polarizer and blocks out all light. Is there such thing as a polarizer that only polarizes a specific color band? Cheers, T
Forum: Projectors
 
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