Question about ViewSonic Optiquest Q7b Flat panel TFT 17" Monitor

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View sonic Optiquest Q7B-3 comes on for a second then black

The monitor comes on for a second then goes black. I was told to replace the flourescent starter. I wanted to get another opinion before I proceeded.

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  • Anonymous Apr 11, 2009

    My monitor Optiquest Q7B-3 is coming on for a second and go off. The green light is blincking. Can you tell me what is wrong? What parts I have to replaced? Thank you.

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Dantheman009,

Don't know if this will fix your problem, but my monitor did the same thing. If you look on the bottom of the power supply board, you will find Q305 and Q306. They are probably both shorted. I replaced both transistors and the capacitor C305 on the top of the same board. The capacitor was open. After I replaced the parts it is working again. Look with a magnifying glass and make sure there are no bad solder joints. The only place I could find the transistors were at
www.bluestar-online.com. Make sure you order the 2SC5706. It is an exact replacement.

Good luck!
lotto-50

Posted on Dec 24, 2008

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Word of warning switching power supplies can kill you quickly never work on it live and let it discharge at least an hour before working on it.

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