Question about ViewSonic VA800 17.4" Flat Panel LCD Monitor

1 Answer

Short, 3/8", horizontal blurs

I have a Viewsonic VA800 monitor that displays horizontal blurs emitting from objects on the screen. This gives the impression of movement.
Any thoughts? I don't want to give up the monitor. I like the vertical aspect.
Thank you, Dave Johnson , rustybeast@myway.com

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  • hubcapper Sep 26, 2008

    I am a tv and repair everything tech at trade...25 years in the vidio and consumer repair biss.............I have replaced a bunch of electrolitics on the main board ,,but haven't found the cap thats causeing this..ITS most of the time a cap that causes vidio issues with the flatscreen tvs and monitors.......NOT the power supply..tryed that... .Have white streaking after all the lettering ..anyone else that have found the repair to the problem i like to know....email me at n3phh@yahoo.com regards and best73--==de===-- Henry

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  • 585 Answers

I posted this answer on another "white streak" question, I suspect this is right:

This issue presents itself in different ways in this monitor, in the form of smeary video, or color changing from the left to right, or as you indicate, a smear following text. I know this as I own this monitor, and have repaired this myself. There are three 1 mf capacitors, surface mounted on the control board inside the monitor that fail. They are in the RGB input lines, and when they fail they cause distortion of the RGB signals, causing what you see. They are the three caps you will find in a row, spaced maybe 14mm on the board between the VGA connector and the processor chip. I would replace all three, observing polarity markings. You can get by just fine using old-style thru-hole caps, just form and clip the leads and solder 'em down on the surface-mount pads. I highly recommend proper soldering tools for this job though, especially for the removal of the old parts, they don't want to come off unless you can heat both pads at the same time.

Posted on Dec 14, 2008

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Posted on Jan 02, 2017

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