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Screen goes blank after about 5 minutes of operation

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Power up to black backlit screen but won't go beyond that . I have to unplug the TV to turn it off...Power board seems OK. Vizio VU42L FHDTV 10A

Posted on Feb 02, 2010

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The problem you are describing is a defect TCON board. There is a major issue with this model and the T-CON board causing the screen to go blank while it is powered on. The replacement part should be bought NEW as all used first gen boards have the same issue. The board can be bought new from Sharp at $289 or from Discount-Merchant for under $150.
Go here

Posted on Apr 24, 2013

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Posted on Jan 02, 2017

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SOURCE: Video comes on but I lose the picture in 3-5

U still have sound,when screen go black?Than ur LCD inverter backlight board is dead.Replaced this LCD inverter backlight board,will get ur picture back.Tries websites Shopjimmy.com,Ebay.com to buy a refurbish LCD inverter backlight board for the replacement.

Posted on Mar 17, 2010

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SOURCE: The screen blanks out after approximately 20 minutes.

The power supply board is dead.Those high voltage transformers on the power supply board,one those power coil have a short in it,that why it cause this shutdown a have a loud electrical current noises.Tries websites like Shopjimmy.com.Ebay.com to buy a new refurbish power supply board for the replacement,should solved this loud electrical noises shutdown to tv.

Posted on Jul 10, 2010

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