Question about LG Televison & Video
The LED backlight driver controls the operation of the white light. It may be incorporated in the main board or the power supply board. It can also be a stand-alone board. Depends on the model. You can find the parts you need from here: TV Parts Universal TV Stands DLP Chips ShopJimmy
Posted on Dec 21, 2016
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Posted on Jan 02, 2017
most likely you have a failed backlight inverter, but there could be other issues as well. IF you have access to a multimeter, you will first you want to verify that the 24vcd output is present from the power supply. Second, you want to verify that you are getting the "backlight on" signal from the main board which should be around 3vdc. There should be a terminal on the power supply or inverter board that says "BL ON" or "lamps". If it is your inverter that has failed, the good thing is that they are usually very cheap and easy to replace.
Posted on Sep 10, 2012
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.
In some models of LCD TVS; the backlight inverter and its T'Con board will be a part of the panel itself, and will be a built-in type inside the LCD panel. If so, they can't be replaced. In this case; a panel replacement is the only repair. For some other models, the backlight inverter section circuit will be a part of the main power supply regulator [SMPS]. To such sets, the power supply section circuit too should trouble shoot. Contact any service technician. The circuit will differ with models and versions.
Posted on May 30, 2015
SOURCE: Repairing TV,sound works, see screen w/flashlight. However no backlights show,unsure what board I need to replace I have a LG 50LN5100. What is the actual board that needs replacement picture below.
Check out the links below to eliminate the Inverter circuit
and / or LVDS board
Instruction for LT30FMP
Posted on Apr 02, 2016
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