Question about Vizio VW42LF 42 in. LCD HDTV
Didn't get sound nor picture. Replaced mainboard and now when I turn it on I get sound and the backlight and picture (blue screen) flashes briefly before going black again. When I turn it off then back on the same thing happens.
After replacing the main board, a software update will be necessary in most cases. Check it.
Posted on Jan 08, 2013
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Posted on Jan 02, 2017
There is no back light in plasma TV, Base on the description, the Z Sustainer board is bad. Replace the board will fix the problem.
Posted on Feb 17, 2009
LCD's use a colorful crystal see through display which only visible when light is shining through it. if you have sound and no picture it's always a faulty PSU. Very easy to change out actually.
Posted on Mar 27, 2010
SOURCE: 26" LCT HDTV Backlight Problem
It can be that the inverter is not getting the 24vdc fromt he power supply module, check for that first, you can check it at either the power supply termninals or at the inverter board. Look to see if the power supply has any leaking/bulging top caps. Modules are easy to replace, fixing it down to component level is not so easy unless you have proper tools an electronics knowledges.
Power supply and Inverter bd: http://www.shopjimmy.com/catalogsearch/result/?q=Vizio+VA26L+
Learn more here:
Posted on Jun 14, 2010
Testimonial: "Thanks. I swapped out the inverter board for one that I know works, but still have the same proble. I'll look for indications of a bad power supply for the backlight."
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