Good morning friends, I ask for your experience and help, I have an LG 47LA6200 TV which I have changed some LEDs of your strip, the thing is that I suspect that it is why the voltage that feeds them was altered, I would like to regulate it using the control of service to avoid changing the physical resistances, but the issue is that I do not find in the service manual the voltages with which the LEDs should be fed, they will have that information. I would appreciate.

what type of LED are you using if it is 3 volts it will burn "LG" uses 6 volts

Friend, your TV uses 3 volt 1 watt LED, the most recommended solution is to replace them all, they have limited life and if some have already failed some others are close to fail too. In some of these TVs in the normal menu you have the option of lowering the backlight, but this will only prolong the life of the LEDs a little, just as they will continue to break, change all for greater warranty. Greetings and luck