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How do I get the picture back on my LG LED 50 flat screen? Sound works, no picture.

The screen went dark on our year and a half old LG LED 50 flat screen. Sound works, can see screen when you shine a flash light on it. Replaced the power supply/LED board on it and it didn't fix it. Model # 50LN5100. Service code: 50LN5100-UB.BUSYLJR, what part should I replace now?

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  • 47 Answers

-You have a bad panel. Led arrays internal to the panel are defective. Replacement cost exceeds economical repair.

Posted on Jul 10, 2015

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6 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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Azrael SRL

  • 11800 Answers

SOURCE: lg flat screen model 26lx1d

The blinking red light signals the fact that the power source is in protected mode - it's fully functional (as the green light also shows) but has been shut down by it protection system.
The protection system of the source is engaged when 2 things happen: either there's a short on one of it outputs (you will have to test the output voltages to identify the failing board and from there if the board can be repaired - start with the inverter) or if the processor can't load the firmware - this is almost always caused by a hardware failure of the processor and in that case the mainboard will have to be replaced.
In that case it will cost you around $200 to get a replacement board, plus the labor. Now you must decide if the tv is worth that amount of money - in my opinion it doesn't.

Posted on Sep 27, 2010

SOURCE: No picture on mu LG television.

Try the old flashlight test, turn off the lights in the room. Turn on the set and flash a bright flashlight on the screen. Do you see the image or is the screen totally black?? If you see the image, then most likely you have a backlight problem. Verify that you have 24V on the power supply for the inverter

Posted on May 21, 2012

vinceisaac

francoise cleofas

  • 2432 Answers

SOURCE: lg philips main board, ive just replaced this board as old board was stuck in service mode flashing red blue green screen, ive connected this new board an now have sound but no picture. t-con board te

does the screen totally black or with only white screen?. recheck all the connections going to t-con board and x board which you missed.

Posted on Oct 03, 2012

gopakumarg43

The Knight

  • 76204 Answers

SOURCE: lg led tv backlight

Fault with its main 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://electronicshelponline.blogspot.com/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

Posted on Feb 05, 2015

gopakumarg43

The Knight

  • 76204 Answers

SOURCE: Technovision 3251 32 flat screen television with phillips pt190 pt3 power supply whitch has being replaced with known good board after switch on still nothing no standby light backlight sound

Sounds like main board fault. 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://electronicshelponline.blogspot.com/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

Posted on Feb 06, 2015

Testimonial: "My thoughts to as I was looking in the way of known stock faults with this board helpfull on theConformation.7"

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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.

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