Question about Vizio VX37L Television

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VX37L Screen Suddenly Went Blank, Now No Image, Sound Only on Cable Input, VIZIO Logo Lights Up

Last night I was watching my TV and suddenly the screen went dark. I thought at first it was the cable channel until I realized there was NO BACKLIGHT on the screen, it looks as it the TV were turned off. At that exact same time however, the sound continued over my Cable Box's HDMI Input. I was able to cycle the power with the remote but once I turned it back on the sound never came back over HDMI. If I turn use the remote to change the input to the standard coaxial Cable TV input the sound will come through. Still though, no backlighting or image of any kind. I'm seeing notes about issues like this being either the Inverter Board or main Control Board. I'm curious, does it sound more like my issue is the Inverter Board considering the other things that ARE working like the remote, and the sound for certain inputs? Just looking to see if I can narrow down my issue.

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  • Vizio Master
  • 933 Answers

Hello,
turn on the set, grab a bright flash light and dim the lights in the room. Shine the flash light on the screen, if you see a faint picture on the screen, you are dealing with a backlight problem. There are several things that can cause this. One, a bad backlight inverter, two, faulty 24vdc power supply, three, bad main board, or a bad faulty backlamp.

Posted on Jun 04, 2013

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Posted on Jan 02, 2017

budmrtn
  • 11361 Answers

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:
http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net


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."

  • 12 Answers

SOURCE: I have a vizio vz37l tv. When i turn it on the

its the main board...

Posted on Mar 07, 2011

deltonsmith9
  • 96 Answers

SOURCE: Vizio 32" Froze, then no more picture or sound

how long did you leave it unpluged

Posted on Jun 04, 2012

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