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Light flickering then only green stays on. Chip problem ?

Optoma EP-739. After couple minutes get light flickering then only the green stays on. I was told it could be a chip going bad. Are these chips easy to replace ? not integrated to system board ? or would I be better off replacing entire motherboard ?

Thanks so much.

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Colorwheel. you should replace it.

Posted on Dec 23, 2009

  • Jim Peters Apr 15, 2011

    You might try using canned air to blow around the color wheel. Sometimes dust particles clog the color wheel timing sensor & it may be an easy fix. Remove the lamp cover door & remove the lamp, use a small flashlight & shine on the color wheel which sits directly in front of the lamp. Blow air towards the opening that leads to the wheel & try to get air to flow upwards by bending the plastic tube as the sensor usually sits atop the wheel. Inspect the lamp while you have it out & look inside lamp at small bulb for any bulging, discoloration (should be clear). If it's fogged or white colored it has too many hours & needs to be replaced. Reseat the lamp & try again to see if there's improvement. There are many causes for this condition but this may be a quick & easy fix.
    Good luck,
    Jim

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