Question about LG 42LB5600 42" LED TV 1920x1080, 60 Hz, HDTV
I replaced the main board/ led driver. I have sound and can see the image with a flashlight
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Posted on Jan 02, 2017
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
If I may suggest, before changing, please check that the inverter board is producing the necessary voltage to drive the backlights or not. If the board is producing the necessary power and still the backlight is not coming on, there is possibility that some of the LEDs in the backlight array have failed.
Posted on May 04, 2016
Testimonial: "No matter which HDMI input I use the screen is totally black again. The apple tv works fine on a different Vizio TV with a different HDMI cable."
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.
Posted on Oct 08, 2016
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