Hi Cop, it's true, all the backlights punish the leds in excess, when I repair a backlight I always touch the source to lower the current, the LEDs thank me and they don't burn ... It's 50 leds at 3 volts each one, it's 150 volts, you're not too bad with the voltage, and you have 156 You do not need to add a resistance, I will tell you how a source of a backlight works and you will realize that the resistance does not help since the current will be the same The source of the LEDs is a constant current source, it will increase the voltage of the LEDs until they turn on and circulate through them the preset current, between 250 and 300 milliamps, when the circuit is opened by a defective LED or a false contact current never circulates then the voltage rises vertiginously until the overvoltage control detects it, the protection acts and the voltage drops slowly Well, understanding this, if you want to lower the LED current you must work on the current sensor of the backlight source driver ic, it is not difficult Do you have the diagram? but I uploaded the code of the ic that handles the backlight You have to identify the resistance R1 of this application circuit on your board, it is the one that goes from the LED display to ground and raise it by 20%