Question about Hitachi CP-S225 Multimedia Projector

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Red flickering spots all over the screen

When the unit is on, I now get the whole screen covered in red spots that flicker, which makes the picture very hard to see, especially when a dark image is displayed

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  • pandb Mar 27, 2008

    I have already tried that, but the red dots are there even when you just turn the projector on.

  • jbates58 Aug 26, 2008

    i have the same problem wih my projector, and i dont know where to get a new mainboard or how to ix it.

  • donmoo Sep 28, 2008

    I have the same problem also. It was telling me to replace the lamp then reset lamp timer, I have done this, with a new $500 lamp and the picture quality is better than it was but I am still getting red flickering spots.

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  • Expert
  • 563 Answers

Hi there

Have you tried another cable ?

Posted on Mar 26, 2008

  • Marnus Jacobs
    Marnus Jacobs Mar 27, 2008

    Hi there



    I'm afraid you are in for a new Mainboard then.



    Must warn you that it could be a costly exercise !

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You can try adjusting the Blue color output. (Very touchy and dangerous adjustment)

If you take off the front cover/speaker cover, there should be a access panel. Behind that, there should be a small rectangular black box with 6 screws on it. This is the focus block. (At least this is where most of them are located) If there is no front panel, It may be located on or near the flyback (High Voltage) transformer on your model accessible from the back instead.

It sounds like you may need less Blue in the mix. There is a screw for each color. R, G, and B. Do not mess with the focus screws, just the ones labeled 'SCREEN.' They may have silicone over them to prevent them from moving. If so, you will need to remove it and put more on when adjustment is complete.

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Very HIGH VOLTAGE. I found that out the hard way.

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