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PJ503D shadow at the top of the image

post #1 of 9
2/4/11 at 10:14pm
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This is great, I can't post a link to what it looks like. See below in next post.

If I use keystone correction to move the image out of that area, it's all good. This thing only has 100 hours on it.

Any ideas? Thanks to all.
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post #2 of 9
2/4/11 at 10:14pm
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Looks like this - http://img593.imageshack.us/i/p1030064.jpg/
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post #3 of 9
2/5/11 at 6:50pm
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Nobody? This presumably happened during shipping.
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post #4 of 9
2/8/11 at 12:55pm
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Last try
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post #5 of 9
2/8/11 at 3:09pm
I have never seen a projector do what yours is doing. But it is either an optical part inside that is out of alignment or something that has shifted and is protruding into the image/light path. The only way to be sure and to correct is to open the projector.

If this was a NEW projector, I would say send it back. But since they stopped making that model in April 2009, you bought it used. Now, if the seller gave you some guarantee, then take it up with him and see if you can resolve this.

But there is no way this is normal for ANY projector.
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post #6 of 9
2/9/11 at 12:25pm
Thread Starter 
Quote:
Originally Posted by Sheridan1952 View Post

I have never seen a projector do what yours is doing. But it is either an optical part inside that is out of alignment or something that has shifted and is protruding into the image/light path. The only way to be sure and to correct is to open the projector.

If this was a NEW projector, I would say send it back. But since they stopped making that model in April 2009, you bought it used. Now, if the seller gave you some guarantee, then take it up with him and see if you can resolve this.

But there is no way this is normal for ANY projector.

I did take the bulb out, and it didn't seem like anything was obstructing it there. Where in the light path could this be? I can't see anything looking into the lens.
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post #7 of 9
2/9/11 at 12:32pm
If that "shadow" completely obscures the image, then it has to be inside the imaging chamber, in front of the imaging display. If the "shadow" only DARKENS that portion of the image, then the problem is in the light path BEFORE the imager, probably in the area of the color wheel/light tunnel.

You are not going to solve this by merely removing the lamp. The projector MUST be opened to find and correct (if possible) the problem.
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post #8 of 9
2/9/11 at 6:11pm
Thread Starter 
Quote:
Originally Posted by Sheridan1952 View Post

If that "shadow" completely obscures the image, then it has to be inside the imaging chamber, in front of the imaging display. If the "shadow" only DARKENS that portion of the image, then the problem is in the light path BEFORE the imager, probably in the area of the color wheel/light tunnel.

You are not going to solve this by merely removing the lamp. The projector MUST be opened to find and correct (if possible) the problem.

This is great info for me, thanks. I've taken laptops apart before, but I have no clue about projectors. Maybe it's something very basic, like a piece of plastic which got shaken out of place.

The shadow darkens that portion of the image, although severely. It doesn't completely obstruct it.
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post #9 of 9
2/9/11 at 6:27pm
Then you need to look for an obstruction somewhere between the lamp and the imaging chamber.
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