Question about InFocus ScreenPlay 4805 Multimedia Projector

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Picture The picture has a yellow streak down the right side. I changed the lamp but it is still there.

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Re: Picture

Hi, Might it be the lens? The exposed portion of the lens do get covered with grime and dirt, maybe not much but when used, it gets baked because of the heat from the lamp. Cleaning it by wiping is not enough. You have to use a solvent to really clean it. One thing to remember is to clean it when it is at room temp and not after use (even a short one). The sudden change in temp is not that healthy for the lens. Since you were able to change the lamp, perhaps you can also do the inside portion of the lens. Treat it like your eyeglasses or the windshield of your car. Sometimes you really have to rub on it hard to remove the stains and smears. Hope this be of some help/idea. Post back how things turn up or should you need further information. Good luck and kind regards.

Posted on Sep 16, 2007

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We supply original projector parts: lamp, bulb, Lcd panel, Lens, DMD chip,color wheel,
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Jerry China Lampdeng Limited
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Hi danny,

I also replaced the color wheel in my EP739 after the old one disintegrated suddenly. Colours were then all over the place. Actually, it looked like each colour channel was displaying all the colours of the rainbow!

Here is the procedure I used to solve the problem - maybe not as elegant as Marrie's solution, but it will not cause any damage, will most likely solve the problem, and you will be able to get everything back to the way it was if it doesn't work:
  1. Have the projector running and displaying a stationary picture. The right sort of picture to use is one that has a full range of brightness values from near-black to peak white. I used my lap-top as the source. Also, this way you can compare the projector's picture with the picture on the lap-top.
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  5. If this doesn't fix the problem, return the Index setting to original. My original setting was 354 and the new setting was 461.
I do not advise touching any other settings in the service menu unless you have access to a service manual and know what you are doing.

Good luck!
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