Question about Yamaha DPX 1 Multimedia Projector

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I need to remove 2 blob dust in projector ptae2000

Please how i can do this

thanks

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Canned air. remove the top of the projector and blow out the dust from every nook and cranny.

Posted on Aug 19, 2009

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Viewsonic 5132 dust blobs


Most likely your DMD chip has dust or hair on it. You can try blowing it out with compressed air but the best thing is to tear down and clean the dmd chip itself. Very carefully. Here is a video of a similar unit. SO far all the DMD projectors I have worked on have had a very similar set up. Take pictures as you go.
MItsubishi XD206u DLP Projector Lens Assembly Cleaning

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The screen shows multiple tiny dots. (stars)


Are they sharp and defined, or 'blob'-like? If they are sharp, that would indicate a faulty DLP block (not worth repairing, unless under-warranty.) If they're more 'blob'-like, it's probably just dust in the optical block. That can usually be remedied by removing the lamp, and blowing-out the unit with an air compressor. Canned air won't do the job, as there's not enough pressure.

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1 Answer

Bubbles are projected on the screen


I am assuming that the "bubbles" are most prominant when the picture is dark. If that is the case, it is most commonly referred to as dust "blobs". Dust particles get on the lens assembly inside the projector and are just out of focus so they appear as blobs or bubbles. If you can carefully remove the cover and gently blow out the lens / color wheel area with compressed air it should reduce the "bubble" effect. I would not recomend any further dissasembly as it is complex and time consuming and unless your very careful, could end in disaster. Don't forget to clean the air filters either.

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1 Answer

HD70 DLP Projector: The projector is used and about a year old. It cur...


Did this start occurring after you replaced the lamp?

The reason I ask is I had the same issue after changing the lamp and it was caused because when I took out the old lamp I noticed dust in the lamp housing which I attempted to blow away.

This caused the problem because some dust got further into the projector, specifically around the color wheel. I sorted it out by taking the projector apart following the instructions here:

http://tantht.blogspot.com/2009/02/how-to-remove-dust-blobs-from-optoma.html

(note my HD70 was out of warranty, if yours is not, I would recommend contacting Optoma to get it fixed).

Follow the above instructions to step 14 and then locate the color wheel which is at the front of the projector behind a dark gray, plastic type square shaped cover.

You have to be very careful here, but remove the color wheel (there is one screw holding it in place) - note it

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1 Answer

Have changed the bulb because of yellow blob on the picture and it has made no difference


the yellow blob is from a fried polarizer on the blue lcd panel due to excessive dust and heat. you'll have to replace it, but hitachi doesn't sell individual optical engine parts, so you may have to replace the whole optical engine.

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1 Answer

Vp800 LCD Projector has dark blob on display.


blow out any dust with canned air. chances are there is an object blocking the image. or there is a crack or burn spot on the 2nd fly-eye lens (diffuser). the first one is right next to the lamp (if you remove the lamp, you'll see it). the second is right on the other side of it.

Jul 14, 2009 | Multimedia Projectors

1 Answer

Hair inside optoma hd70 lense


I had an issue with "dust blobs" on my HD70 and was unable to locate instructions or a tutorial on how to remove them. I figured maybe this could help you if the hair is located within the same location as the dust. Please check out my blog at http://tantht.blogspot.com/ for instructions on how to remove dust blobs from a HD70 as this process worked perfect for me and I no longer have these annoying spots when watching movies!!

Jan 26, 2009 | Optoma HD70 DLP Projector

1 Answer

Blue blob on screen. Blob is visible even in Picture Mute


Sharp Factory rep told us that it would cost more to fix it than replace it. SO that is what we are going to do.

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1 Answer

Yellow circle


there is a light filter on the blue lcd panel that is fried due to excessive dust and heat. unfortunately, you'll have to replace the entire optical emgine.

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