ViewSonic VX922 19" Monitor Flat Panel Logo
Posted on Sep 20, 2010

I have a Viewsonic VX922 My led power goes on and off and the screen flickers then finally screen is black.

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  • Posted on Oct 03, 2010
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Defective power board can cause of on and off the led power, the boated electrolytic capacitor of secondary power supply and inverter area, shorted semiconductor of inverter area. The electronics repairman can fix this.

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1 The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or a broken contact, identified an internal fault and kicked in , starting the flashing light.


If you are in situation one, then the monitor will reset just unplugging power cord for one or two hours, sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

Common faults that can occurr suddenly are a blown capacitor on power board, the inverter board powering up backlight lamp has blown, or a fault on main lcd controller board.
check also the video cable, if the cable is shorting, or the connector is bad, you can get same flashing state because of the video cable.

Check connectors, try moving the video cable, and if the cable is not built in, then also try a replacement cable.

If under warranty contact Viewsonic to find out a Viewsonic service point.
See:ViewSonic - Support & Service

If you want to repair at your own expenses, just locate any good qualified repairer.


Regards
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