Question about Optoma EP737 - DLP PROJECTOR - 1500 LUMENS *NIC* Multimedia Projector

2 Answers

Optoma DLP projector EP 731 bottom (approx. 25%) of image is very dark. New lamp did not help. if picture is inverted top-to-bottom, dark area remains on bottom.

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  • jackt731 Aug 07, 2008

    Proposed solution referred to LCD. This is not an LCD projector. It is DLP

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There is a possibility that the polarized filtering sheet is damaged or is out of place, you may need to bring it to an LCD specialist or an authorized repair shop for the brand.

Posted on Aug 07, 2008

  • marlon john madrid
    marlon john madrid Aug 07, 2008

    if that is the case then have you checked the status of your mercury vapor arc lamp unit, the lighting system or the LED lamp? you mention you replaced a bulb in the unit earlier thats why i asked.

    now if the light source is okay, you may want to check on the projector chips, one that allows the projector to produce separate green blue and red colors, because the shading of the image produced controlled by the projector chips.




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This sounds like an LCD shading problem. Optoma or an authorized service technician will need to replace the LCD filter.

Posted on Aug 07, 2008

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2 Answers

Lamp comes on briefly and then goes out


Check poewer connection
Check if fan filder is dirty ( if it is just hoover it out)
If "lamp" light on top of the projector blinks or stays lit - lamp probably faulty
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moz-screenshot.jpgmoz-screenshot-1.jpghello,
This is an unfortunate incidence and i will send you the serviceable manual of your projector if you can send me your contact email address to my email.Yes ,there are instruction to follow to replace lamps in projector if not you might miss it. First you must confirm that the lamp is OK from the vendors you purchase before anything.

Bye.
anytony2004@yahoo.com
Aniekeme Anthony.

I

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Try this: There is a stuffed 10v 3300uf capacitor on the power board. You need to replace it.
Bellow you can check in the picture where the capacitor is located.
0f5b76c.jpg
Notice that in this picture I have already took the bad capacitor out and replaced with two small cords to reach the bottom and test the new capacitor.
To reach this place is not fast, several layers of plastic and metal must be removed, but is not a hard task to take the capacitor out and replace it for another.
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It's a setting in the menu. A few minutes poking around will fix it.

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Pls check if the lamp is not so old that is giving the same problem. If lamp is almost new, then you can have a check with the Ballast unit card and then the loose connection in the Power supply or may be overheating and tripping.

Viren

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