Question about Slide Projectors

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No Video Display

The "out of production" Toshiba LCD Video Project TL P670 has great sound and the lamp (1300 lumens) is very weak. There is not video display, just sound. Does the lamp project the image or makes it bright so you can see it better or is there another part that needs replacing?

Thank You

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  • Ronald Nisby Mar 25, 2008

    I am truly grateful for the response. I figured the lamp needed to be replaced however, the second part of the question was "is there another part that needed to be replaced?. There is no video and the lamp is bright enough to determine if the video portion is working or not, though it still need to be replaced. You did not say how the video is produced though you covered the subject of "light" very thorough. I will open it up and play around with it. Maybe I will discover the solution. Thanks a bunch for the help.

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The lamp should be blindingly bright. The light passes through a color LCD and through a series of lenses that will project the image onto a screen. If the light is "very weak", you won't have enough light to project onto the screen. Try using it in a pitch black room really close to the screen. If you can see ANY image being projected, then the unit is fine and all you'll need is the lamp.... usually a rather expensive item.

Posted on Mar 24, 2008

  • Ray LeBlanc Mar 25, 2008

    Follow up: Video is produced by a signal that goes into a decoder within the projector. The decoder sends the color image on a clear LCD "screen". If you held the LCD screen in your hand, you could look through it and view the image. The LCD screen is only an inch or two square. When the light from the lamp passes through the LCD screen, it basically casts a "color shadow" which is focused and resized through the lenses of the projector and onto your screen. Sorry, forgot to address that part.

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