Question about ViewSonic VA520 15" Flat Panel LCD Monitor
I've got a seven year old Viewsonic VA520, just in the last couple of weeks it has started to show signs of its age. After a few minutes on, white vertical dotted lines start to appear, which 'solidify' and multiply until the entire screen is pretty well obscured. Turning it off/on briefly fixes the problem, the longer it's off the longer it takes to reoccur. I'm pretty sure that one of the components is overheating and on the verge of failure. What are the chances that I'll be able to do something about this myself, or are the components too well hidden and integrated to make un-soldering a chip and replacing it a realistic expectation?
Its far more likely some of the capacitors have bulged and/or leaked. reducing their function... its a very common point of failure.
IF you decide to try fixing it. remember there may be quite a high voltage and stored charge inside the tv.. especially the main smoothing caps in the powersupply will hold a charge for a very long time (the big ones) . be careful
Posted on Apr 08, 2017
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Posted on Jan 02, 2017
Here is a suggestion:
By looking at the power board you should see the light, and where it is connected to, so diagnose the circut from that point foreward eliminating any potential of damging the board. try any cables or ribbons.
Posted on Jun 20, 2009
Your dlp chip is going bad and cannot be fixed economically. Several of the mirrors on the chip are hanging up and they won't come back. It will just get worse. My Sharp XR32X is doing the same thing. New projector time.
Posted on Jul 27, 2012
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