Question about ViewSonic VX900 19" LCD Monitor

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Same problem i have a planar 20" monitor and it worked fine for months, then one day i turned of my computer then rebooted it and the monitor just flashes on for a sec then goes black but the light stays green.

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It may be the back plane lamps, and or the back plane power supply that is in a failing condition. If in your model they are changeable, they should be changed together.

You can verify this by turning on the monitor, feeding it with a known working source, and shine a flashlight in to the screen at an offset angle to your view. If you can see some image in the screen, then you know that the monitor itself is functioning, and the problem is back plane lumination.

Jerry G.





Posted on May 19, 2008

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Hi My Planar (PL2010M) suddenly went black. On restart, it flashes briefly but never comes on. Any suggestions?


I have a similar problem on my Planar PD470; power supply failed after about a year and a half. I heard that their HDTV power supplies had a higher than normal failure rate. I have someone working with the company to resolve, but I'm not optimistic... Bah Humbug. How long have you had your set?

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Backlight replacement


Are you sure it's the backlight? Many Planar LCD monitors have issues with the capacitors on their power supply boards. The symptoms include a power light and no picture, or just a flash of a picture when powering up and then nothing.

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If you're not comfortable with soldering and de-soldering electronics, take it to a local technitian for the work and give them the parts list above. That should work if the failure looks like I described. I've fixed several of these monitors so far. All the problems were related to the power supplies. Same with the Planar PL1700 LCD monitors.

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