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I'm trying to fix my TV its a 46 Samsung LCD tv. Screen goes black after few minutes but the sound remains.

The issue I'm having is that the screen will go pitch black after few minutes of watching but still have sound. I replaced backlight inverter board and t-con board but still the same results.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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SOURCE: 32 LG LCD TV

Depending on your electronics skill, they can be replaced with new replacement boards. Usually the inverter boards that drive the backlights tend to blow. Soo its not really an expertise repair unless you know what your doing. The lcd tv's ive fixed the backlights are all on a 2 pin connector.

Posted on Oct 15, 2007

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tvtechnician
  • 105 Answers

SOURCE: samsung lcd tv

that is deafinatly a fault. take it back to the store asap if you can. what the tv needs to be fixed is first replace the main and power board and if problem persist the lcd panel will need to be replaced.

Posted on Nov 07, 2007

  • 8457 Answers

SOURCE: Black shadow boxes on 46 in Samsung 46 in LCD HDTV.

Ur backlight video board is dying,must replaced to solved this problem.Part and labors about $500.

Posted on Dec 15, 2009

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."

TV #1
  • 129 Answers

SOURCE: my 32" lcd vizio vx32L turns on there's sound

Have you tried the T-con board?

Thank you,


tv_1_7.jpg

Posted on Dec 18, 2010

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