LG TV 55LF 55LB NC55 No Backlight - LED Voltage Test - Troubleshoot TV LEDs & Power Supply

How to test Voltages to Determine No Backlight Symptoms LG TV Models: 55LF6000-UB AUSCLOR 55LF6000-UB BUSCLOR 55LF6090-UB 55LF6000-UB BUSYLJR 55LB5900-UV BUSWLJR 55LF6000-UB BUSYLJR 55LB5900-UV BUSDLJR 55LB5900-UV BUSCLJR 55LF6000-UB BUSCLJR 55LF6100-UA 55LY340C-UA BUSDLJR Try all repairs and troubleshooting at your own risk. In this video, we will show how to test voltages to know if the problem of no backlights is being caused by the power supply board or the LEDs. We will show multiple scenarios, so you should be sure you have the proper training and equipment to test voltages on a live TV, with power going to it. Try all repairs and troubleshooting at your own risk, as this can be dangerous. The power supply connection here, runs from the power supply to the LEDs. This will be where our test points are. There are multiple test points labeled as LED+. Before testing you will want to plug in the TV and turn it on. Everytime we test a point, do the following. Place your black probe on a ground and then place the red probe on a test point. The first point we will test is this LED +. I am getting a reading of 215 volts, which is normal. On the next point I get a reading of 145 volts, which is also normal. Since there are an odd number of LED strips in the TV, one point provides power to three strips and the other to just two strips, so the voltages are different. With both of these voltages showing the correct voltages, it shows that both the power supply...