Question about NEC VT45LPK Projector Lamp for VT45

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VT45 Projector: Blue pixels throughout screen

Hi, This projector get regular use, 2-3 times weekly and recently started to exhibit a blue haze throughout the screen which eventually developed into seemingly random blue pixels. The blue pixels do not display on the screen when there is no input (the VGA input is all that is used) and the white NEC logo is onscreen. There is also a large area in the lower middle of the screen which when the unit is running without any input displays as a large yellow blotch. This blotch is also visible when there is video signal, and the blotch moves when the screen orientation is changed. I will be testing the svideo on the unit later today to see if the issue is related purely to the VGA. If anyone else has experienced these issues some suggestion to fix or what to repair would be greatly appreciated. Thanks

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Re: VT45 Projector: Blue pixels throughout screen

If the problem is what I describe as a blue haze over the entire image projected, I was told this is a defect in the cable - we have a Dell Video Projector 2300 - and it takes only a dell VGA cable.

So, the problem is in the cable - solution is replace cable.

Posted on Oct 10, 2007

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I'm seeing an uneven darker blue or a haze along the bottom after I changed the bulb. Looks like a blue cloud along the bottom darker, very noticable when I first shut the TV off and it blue screens during...

You have something on the lens. If the lens was producing excessive heat it could be the melting around the lens itself, or it could be grease from your finger that was clear until it got hot enough to cook onto the glass. Either way, remove and clean the bulb lens (the one on the bulb you change out when the bulb blows) and then re-clean the focus lens on the front of the projector (the one you turn to focus).

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There are also known known hot-key combinations used to switch the laptop to its external VGA mode. If you are using a laptop.

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