Question about ViewSonic VG700b 17" LCD Monitor

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White screen on veiwsonic vg700b

What is the cause, and possibly the solution, if any to this problem? i am pretty adept and can repair this if i only knew where to look. or am i wasting my time

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Usually a completely white screen is an indication that there is no video signal being fed to the panel from the controller. For instance, if you take a working LCD monitor and just disconnect the video cable that goes to the LCD panel from the mainboard, it will turn on and off just fine, but it will light up bright white.

So, there seems to be an issue getting the video signal from your logic board to the panel. This can be caused by a bad cable, a loose connection, a bent and/or shorted pin (from plugging it in wrong), a bad logic controller chip, or a blown fuse/component on the LCD's circuit panel (PCB that runs across the top of the back of the LCD panel.)

Hope this help!

Feel free to contact me with questions, or for sales and service.

Chris
Boise LCD
(208) 891-9117
cjmclellen@msn.com
http://BoiseLCD.webs.com

Posted on Jan 15, 2009

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The Viewsonic VX2235WM has a known issue with the power supply going out. The flashing power light or not turning on is the classic symptoms of this issue. Check out our web site at: www.ccl-la.com. We have a step by step repair guide posted that will guide to doing the repair yourself. It involves changing a few capacitors on the power supply. If you can solder then you should be able to do the repair yourself. If you don't want to do the repair we do offer a repair service for $35 plus return shipping. If you have any additional questions just let us know at: tech@ccl-la.com

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