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Vizio 32L hdtv 10a light in front is on but will not turn on and looked in the back no back lights.But when i try to turn on set from buttons only way to turn off is unplug it sounds like pcb board or backlight?

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You need to open it up and check the caps and voltages in the power supply first, it can be that the inverter board has short circuits and causes the power supply to go into safety shutdown. It can also be the main logic board since you are losing control to turn it off.
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If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

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http://en.wikipedia.org/wiki/Capacitor_plague

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Posted on Aug 03, 2010

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Posted on Jan 02, 2017

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How do i fix a black screen? Vizio thinks its the back light and Nothing looks swollen, burnt, or loose. have the back cover off. I don't know Which board to remove to get to the back light.


Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement.

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This requires profesional Tecks.

CAll Vizio for service.

Lou Margolis
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loumargo@verizon.net

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Ed
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Mills, Wyoming

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