Question about Vizio L37 Television

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Vizio vw37lcd hdtv comes on has sound but no pic and the back light is on but cant see volume or channel changing on screen but they work any suggestion

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You may have bad T-CON baord or the main baord is not sending the DC voltage or the signals to the T-CON board.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.

Posted on Mar 31, 2011

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Posted on Jan 02, 2017

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1 Answer

Vizio back light on, no video


That sounds like a main board failure, I've had a few of those with Vizio sets. But get a proper diagnoses to be sure

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It sounds to me like it's stuck in service mode.There is a button combination with the remote to return it to normal. I would call Vizio support and they should be able to help you.

I think it's a combination like [volume -], [channel -] and power but I could be wrong.

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sound like the inverter circuit board problem. check & replace back same part# inverter circuit board. hopefully could help!!

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