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Monitor goes blank randomly

Viewsonic Optiquest Q91b 19'' LCD monitor goes blank. Power light goes off. I unplug 120VAC from monitor. I plug it back in and display is ok again. Sometimes I can get it back by just jiggling the plug at the monitor. I have tried a new 120VAC power cord and get the same negative results. The power cord plug is a female D connector.Will a defective internal power supply act this way or is it truly a connector mating problem?

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It is the capacitor on the power to the monitor. I have replaced about 5 so for. The capacitor is like 69 cents. Open it up and look at the circuit board where the power plugs into and see if any capacitor are bubbled up. If so then its a bad capacitor.

Posted on Jul 10, 2009

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My SunRay 2 keeps freezing
can someone help with one solution

Posted on Apr 07, 2011

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Try a diff monitor..if same thing happens then it is the system/if everything is fine then replace your monitor

Posted on Jan 19, 2009

  • mike anonymous Jun 04, 2009

    issue is with your monitor, if u can wiggle the wire and then sometimes it works and sometimes it does not then it will be a issue with the monitor - try a diff monitor to know for sure

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