Question about Hitachi CP-X960 Multimedia Projector

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Brightness Varying during operation

We just replace the bulb, but are noticing, that the brightness of the images almost seems to pulse. It may have done it before the bulb change but the bulb was becoming so dim it might not have been noticeable. I have run the projector for an extended period of time to see if it would accentuate the problem, but it doesn't seem to amplify the pulsing. Any suggestions?

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  • Grego624 Apr 14, 2008

    Sorry for the double post, my web browser froze during posting, so I thought it hadn't gone through. The good news is that if you fix my problem you could reply to both, and have fixed 2! Thanks.

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  • 472 Answers

Inside all projectors is a lamp ballast that runs the lamp. It could be in the early process of failing.
This website will explain the whole ballast thing clearly. It is important that if your ballast is failing, then you get it replaced or you maybe infor another very expensive light bulb very soon.

Hope that makes your issue somewhat clearer (pardon the punn)

Posted on Apr 14, 2008

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Posted on Jan 02, 2017

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I have a Kodak Ektagraphic with no model listed on it at all. How can I find a replacement bulb, all I can find look wrong.


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Picture way too dark to watch comfortably. Have already adjust all settings to maximize brightness. Bulb was replaced late last year and says 1,000 hours have been used but projector has not prompted me...


Unfortunately dim image is normally due to a defective lamp assembly. I'd recommend removing the lamp and inspecting its condition. You'll notice black corrosion build up or a bubble is starting to form around the filament of the bulb if it is what's causing the dim image.

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Typical life for a lamp in that projector is:

3000 hours on Normal mode
6000 hours on Eco mode

You can expect a brightness loss of 50% when you are approaching end of a lamps life.

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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


Hi,

The most common indications of a weak bulb in a Sony LCD Rear Projection TV are:
  • Dimimage with low brightness and contrast.
  • NoPicture, Dark Screen.
  • Shadowsin Image, sometimes circular.
  • Intermittent Shutdown.
  • Fluctuating or Flashing Brightness.
  • Longerthan Normal starting time.
Also check for distortion caused by Optical Engine Failure. If any of these faults are present, bulb will not fix. Sony Optical Engine Fault Gallery

Here is a link for Identifying Sony TV Lamps.

easyab@hotmail.com

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1 Answer

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The installation of a new lamp will not affect the color of your image.Normally what happens is that because a new lamp will add more brightness to your image,the color issue is then more noticeable,so its possible that the color issue was already there .

Apr 29, 2010 | Sony Grand WEGA KF50WE610 50" Rear...

1 Answer

Picture getting dimmer (?)


Hi, yes it`s time to replace the lamp, and remember to turn maxxed out brightness to normal once you replace the lamp :) good luck, video-tek

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the light polarizer on the blue lcd panel is fried due to excessive dust and heat. unfortunately, you'll need to replace the whole optical engine.

Dec 15, 2008 | Office Equipment & Supplies

1 Answer

Brightness Pulsing


Reply posted in the other thread =)

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1 Answer

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This sudden changes in brightness are caused by the change in voltage inside the tv,not in the outlet in the wall but inside the set,The changes are an indication something is going wrong and it needs to be corrected,the set does have a brightness limiter but it only works when the set wants to get brighter than normal,You need the assitance of a servicer to correct this problem.

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