Question about Sanyo PLC-SW30 Multimedia Projector

3 Answers

Big blue dot

My projector is showing a large blue dot on the screen, and im stumped to why this is happening. i've cleaned the lens numerous times and i've even tried replacing the globe, still no luck.

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  • Timdvdmaster Apr 19, 2008

    oh it hurts.

    yes its the polariser. and yeah looks like i'll have to get a new one :(

    anyway thanks for the quick reply.

  • webrichters1 Sep 17, 2008

    I have a Sanyo SU30 projector that has displays a blue-ish tint/color in upper middle of the screen. Sometimes the area is larger than other times. Replaced the bulb but still has same problem.

  • Anonymous Mar 25, 2014

    m210x white dots

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If anyone wants the service manual for this unit.. Here is is. free.
http://yama.co.za/forum/index.php?topic=146.0

Ive fixed many of these projectors polarisers.. temp sensors.. etc.. Found all the solutions in the repair manual..

Posted on Dec 03, 2009

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I agree with Mark Webber, as I had the same problem with a projector. It was probably caused by "burnout" as a menu message box was left sitting for hours , if not days, displayed on the screen. It left a green, almost square area. I took the projector apart and managed to remove the damaged polariser, but when I contacted a service centre to get a replacement part they told me it was not a viable repair for them to do, nor would they supply me with a spare part. real shame, cos i am sure it will be a relatively cheap component. Hope you have better luck than me

Posted on Apr 17, 2008

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This is going to hurt..
You probably have a polarizer failing on one of the LCD panels inside.
There are 3 of these in LCD projectors, red, green, and blue. They all get the light fed into them, that light is then combined and fed through the projection lens.

You will need to contact Sanyo to find a service centre to replace it.

Posted on Apr 17, 2008

  • Peter Thompson
    Peter Thompson Apr 19, 2008

    The problem with projectors in general is they don't sell enough of them to stock huge amounts of parts. They normally make up about 2000 units, then keep a 100 or so more that they will strip for parts as needed.



    This is why alot of the times if you have a warranty repair close to the end of the warranty you end up with a different model projector sen back that was higher then the previous version.

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