LG 47LN5700 47" LED TV 1920x1080, 120 Hz, HDTV, 3D Logo
Brigham Worsencroft
Brigham Worsencroft Posted on May 18, 2015
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Lg model 47ln5750 screen went black

Tv has sound but no picture

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Al Kizina

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  • Posted on May 18, 2015
Al Kizina
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That model is an LED Backlit unit. The LED driver could be bad or there could be a power supply problem. Sometimes the problem is a cable connection. Is there an picture that you can see in a dark room? If you can see a faint picture, the problem is probably the LED back light.

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How do I fix LG 47LN5750 TV with NO picture but HAS sound?
This is a LED TV so there won't be an inverter board, they're only on LCD sets, what is wrong with your set is you have shorted LED lamps in the panel, its a common issue with this model TV, Ive replaced dozens of them in the last couple yrs, its not a fun job to do as the panel can be damaged very easily if extreme care isn't taken when handling it, watch some youtube vids to get an idea of how to do it...Good luck!!
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Mar 26, 2018 • LG Televison & Video
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Have an LG 47LN5750 led tv and the screen is blank, has sound. The logo flashes and goes blank. standby light flashes three time.
1) Check your power plug wiring and replace the fuse.
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http://www.lg.com/us/support-product/lg-47LN5750
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Apr 24, 2017 • LG Televison & Video
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Nov 09, 2016 • LG 47LN5750 47" LED TV 1920x1080, 120 Hz,...
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I have a 55" lg flat screen tv. All a sudden i turned it on and the screen was black. You can see a little bit of it on the screen but. Very light. I tried messing with the setting didnt work.
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May 01, 2016 • LG Televison & Video
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Dec 16, 2015 • LG 55LE5400 TV
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I have a LG 47LN5750. No picture, sound yes, I see menu when using the flashlight test and have no back lights showing. please help with my next steps in fixing this issue. Just happened this morning.
What you are describing is common in these sets. The power unit tends to cause the LED backlights to fail. It is a 50 dollar parts cost but you have to upgrade the firmware to prevent it from happening again
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