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TFT VE710b backlight needs 20 Minutes to light up fully.

I have a 17'' Viewsonic VE710b, a few years old now. When I start the monitor the screen is very dark for about 20 Minutes, then goes back to normal brightness.

It's obviously something with the backlight. I wonder if it's the CCFL or with the inverter. I presume it's related to the operation temperature.

Any hint will is welcome!

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  • flameproof May 15, 2009

    I fixed it! Sure it was the inverter. You need to open the case and remove the LCD panel. To open the case you need to pull of the bezel. It's fixed all around the same way, incl. the foot. That will need some modest force.

    The carefully lift out the LCD panel. Open the lock of the two flat cables. Pull out the two cables from the power board.

    Then take out the main board were the 220V come in.

    Then I changed 2 eCaps 470µF/16V, they are located between the 2 coils. It's C903 and C910. If you don't have the same you can try ONE piece if 1000µ/16V (or 25V or more) since the two are parallel.



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The inverter is yoru problem. It takes a while to build up the voltages that is needed to drive the bulbs.

Unless you are operating the monitor in temps below around 40 degrees F... temp is not a factor.

Your prob getting ready to buy a new one. Your inverter(s) are on thier way out.

Posted on Jan 23, 2009


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