Question about BenQ MP610 Multimedia Projector

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Half the screen is bright while the other half is much darker.

New lamp installed now I have this issue.

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  • v8sho Jul 13, 2008

    I just put the old lamp back in and I have the same issue. Saw a disc just to the left of the lamp, anyone know what it is? could I have moved it when changing the lamp? When I'm on a white background I can see the actual line and I see some spots that don't move on my screen. Could I have moved something??

  • v8sho Jul 13, 2008

    I just put the old lamp back in and I have the same issue. Saw a disc just to the left of the lamp, anyone know what it is? could I have moved it when changing the lamp? When I'm on a white background I can see the actual line and I see some spots that don't move on my screen. Could I have moved something??

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New lamp

Posted on Jul 13, 2008

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Greetings,

Correct, if you know how to, try re-connecting the lamp.

Keep us posted and thank you for using our service.
FixYa for all your troubleshooting needs.

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84fdffef-ec73-450a-8fb9-5901d3322462.jpg
Fluorescent "backlight" lamp, inverter & connection wiring.

The lamps are miniature versions of those sold in stores. They require a support circuitry called an inverter that convert & boosts the level of DC to AC voltage performing the functions of a ballast in a traditional fluorescent fixture.

The reason a part of your screen remains dark is because one or more of the components in the picture above has failed and will not allow the lamp to shine. Replacement lamps and inverters aren't expensive - but requires patience and the ability to disassemble / assemble the monitor (which is usually harder to do than it appears) and solder. They are available various lengths and color temperatures (you must get a lamp that is identical or it will be noticed). If this is a new monitor - you ought to return it for replacement. If used, consider the cost of purchasing a replacement (new or used) vs. repair.

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When the lamps are bad, the screen will shut down if the inverter cricuits is sensing open (lamps will not fire up and conduct, or lamps are drawing too much current). You should open it up and inspect the caps in the power supply first, lamps in this monitor are ntoeasy to replace (screnn will to be complete,ey disassembled.

http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net

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Its back light in LCD Panel problem, there are approx 20 CCFLs in 40" lcd panel and one or two in upper half is not providing enough light to give proper brightness so you see bit darker image.
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Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
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