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Flashing colours

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Old 01-30-2013, 02:01 PM   #1
What is HD?
 

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Default Flashing colours

Has anyone experienced the following:
While watching television or playing ps3 games, occasionally the screen image will flicker various colours (red,blue,green,etc). The image is still viewable, but the colours all rapidly flicker and change. I have an optima hd projector connected to a pioneer receiver. I've used hdmi from projector to receiver as well as DVD-d from projector to receiver. All other components are connected to the receiver via hdmi. I would love to hear any suggestions out there.

Frustrated! Thanks.
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Old 01-31-2013, 09:36 AM   #2
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Welcome to the forum.

First I'd try bypassing the receiver and going direct to PJ. Also try using a known good HDMI cable.
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Old 01-31-2013, 12:06 PM   #3
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Please give model numbers as saying I have an optoma projector and pioneer receiver isn't really helpful.
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Old 02-01-2013, 10:19 PM   #4
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Sounds like your susceptible to the dreaded rainbow effect. Your Optoma is a DLP projector using a colorwheel. On some models and with certain folks...the rainbow effect will appear. If this is the case...there's not much you can do.

Here's Wiki's explanation:

The color wheel "rainbow effect"
DLP projectors utilizing a mechanical spinning color wheel may exhibit an anomaly known as the "rainbow effect." This is best described as brief flashes of perceived red, blue, and green "shadows" observed most often when the projected content features high contrast areas of moving bright or white objects on a mostly dark or black background. The scrolling end credits of many movies are a common example, and also in animations where moving objects are surrounded by a thick black outline. Brief visible separation of the colours can also be apparent when the viewer moves their eyes quickly across the projected image. Some people perceive these rainbow artifacts frequently, while others may never see them at all.
This effect is caused by the way the eye follows a moving object on the projection. When an object on the screen moves, the eye will follow the object with a constant motion, but the projector will display each alternating color of the frame at the same location, for the duration of the whole frame. So, while the eye is moving, it will see a frame of a specific color (red for example). Then, when the next color is displayed (green for example), although it gets displayed at the same location overlapping the previous color, the eye will have moved toward the object's next frame target. Thus, the eye will see that specific frame color slightly shifted. Then, the third color gets displayed (blue for example), and the eye will see that frame's color slightly shifted again. This effect is not perceived only for the moving object, but the whole picture.
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Old 02-21-2013, 11:29 AM   #5
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Thank you for everyone's messages and thoughts. I've been away and am going to try hooking hdmi directly from blu-ray to projector and see if that changes anything.
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