Question about InFocus SP-LAMP-LP5 Projector Lamp for LP580 SPLAMPLP5 SP-LAMP-LP

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Infocus lite pro 580

Image brightness fluctuates from normal, to bright. Thought over heating was the cause, as the filters were very dirty. I disassembled and thoroughly cleaned entire projector, and replaced both filters. No change, very irritating, Help me please!

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Ballast or lamp. if there are excessive hours on the lamp, that's the one.

Posted on Aug 03, 2009


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I have what looks like black sots/dust on my projected image. I thought it might have been the bulb but after replacing and cleaning the color wheel i am still seeing the "dusty" image.

Hi Jay,

It sounds like you are having some issues with the polarizing plates. If you are in the US, I can have one of our technicians speak with you. Feel free to check out our website and send us a message. Projector Repair Bulb Replacement

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I have noticed the screen is now not as bright as it use to be, still works just not bright. A darker look is the best way to describe it


The most common indications of a weak bulb in a Sony LCD Rear Projection TV are:
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  • NoPicture, Dark Screen.
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Here is a link for Identifying Sony TV Lamps.

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Image is dim. How do I adjust brightness

You can adjust the brightness through the user menu, under the picture option. You might want to look at your bulb. It might be time to replace the lamp.

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1 Answer

Brightness Problem

On some of the hitachi's the spark gaps will get dirty and cause this, they are located on each crt board 2 on each they are small white and retangular, remove the caps and spray tech cleaner into them and wait for a long time before plugging the set back in, see if this fixes it, if not then you have somting else going on. If you don't have any experience with electronics i would leave it to a pro though.

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Proector image is dim

I have changed the bulb on my LG projector recently. I found the rotating colour wheel to be full of dust. Upon opening the cavity where the light is redirected and reflected onto the imager, I saw all mirrors also had a layer of dust. I don't think it was so dirty that it affected the brightness of the image, but I cleaned it anyway using an earbud. I cleaned both sides of the color wheel as well. You need to be careful in working with the optics of the projector!

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yes it probably is the second hand ds and yes it is the brightness the ds probably doesnt like it too bright you have to belive me because sometimes i get this problem on other games so I turn down the brightness and it works!

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Hi there

I'm afraid this might be a faulty Mainboard.

Your lamp will never make the Projector show funny stuff on the image.

Must warn you that a new Mainbaord is quite expensive

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