Question about LG 47LN5400 47" LED TV 1920x1080, 120 Hz. HDTV

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LG 47LN5400 FLAT SCREEN SOUND BUT NO PICTURE, BUT YOU CAN SEE SHADOWS OF PIC IN THE BACKGRND. MAIN BOARD REPLACMENT? CAN I DO IT MYSELF

WHERE DO I GET A MAIN REPLACEMENT BOARD?

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Yes you can do-it-yourself its sounds like the Back light led's in the back of the flat screen are not getting power. it could be 1 of 2 boards inside the chassis of the TV look online and put that model number in when you look.

Posted on Mar 07, 2019

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Posted on Jan 02, 2017

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SOURCE: What keeps burning out the inverter board on my LG flat screen t.v. model #LG-47LN5400? Just replaced 1 week ago and it's doing the same thing. getting power and sound but no picture. Thank You.

Then you have another board that is shorted or causing an overvoltage condition that is destroying the new PCB

Posted on Oct 27, 2016

Testimonial: "I'm inclined to think it's the main power board but I'm certainly no expert. What do you think?..Thanks so much!"

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LG 47LN5400-UA LED picture has gone out. Audio works. Using flashlight I can see faint menu image. LED Driver or LED Strips? How can I tell?


Back - light problem. 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://electro-medical.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. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board..

Dec 23, 2016 | LG 47LN5400 47" LED TV 1920x1080, 120 Hz....

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LG 47LN5400 blank screen after brief flash


Back - light problem. 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. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Dec 12, 2016 | LG 47LN5400 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.


Hi Rachel, The link below is a YouTube video showing how to fix a Samsung television NO picture GOOD sound, Also there's videos down the right side of the link that may help as well........CHEERS..

LG No Picture Screen Flash 47LN5200 47LN5400 47LA6200 47LN5700 47LN5750...

May 01, 2016 | LG Televison & Video

1 Answer

My LG 47LN5400-UA flatscreen has a black screen, everything works fine except black screen, when I shine flashlight on screen I can see full color picture, I have replaced the power supply/LED board.


Back - light problem. 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://electro-medical.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. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board

Mar 14, 2016 | LG 47LN5400 47" LED TV 1920x1080, 120 Hz....

1 Answer

Can you tell if LED tv has bad LED strips before changing LED Board/Power Supply (as they're in one piece on a lot of TVs)?


This is not easy to diagnose, either use a meter on the power cable to the led or check the leds one at a time

Feb 24, 2016 | LG 47LN5400 47" LED TV 1920x1080, 120 Hz....

1 Answer

I have a LG tv model number 47LN5400-UA. I have sound but no picture. Every once in awhile the picture will flash on then back off. If I hold a flashlight to the screen I can see some of the picture


Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

Jan 14, 2016 | LG Televison & Video

1 Answer

I have lg 47 tv that sud pic stop has sound when you turn on you see a light for sec


Back - light problem. 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.

Nov 24, 2015 | LG 47" 5400 Series LED HDTV - 47LN5400

1 Answer

Which part needs replacing on the TV? See details.


Fault to the main power supply regulator section. Either it will be on a separate board, or on the part of its main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/

Aug 26, 2015 | LG 47" 5400 Series LED HDTV - 47LN5400

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