Chosen Solution
Hi, I have an LG TV 65UM7300AUE and it won’t turn on. There is no red light on the IR sensor and I’ve followed all the basic troubleshooting. After that I have been buying parts from ebay, trying each one to see if it fixes the issue. I tried replacing the power supply board, main video board, IR button and sensor, IR/WIFI cable and lastly the power supply board to main video board power cable and it’s still not turning on. I’m at a loss of what’s going on with the TV. Any suggestions or help is appreciated.
Hi @gabrielomarpr You may have to start again as you can’t be certain that the replacement parts were OK or not. Here’s a composite image of the No Power troubleshooting procedure, taken from the service manual that may help.
(click on image) If you get the correct standby power at the power board, check that it gets OK to the mainboard as it may be a faulty cable between the two. It is the mainboard that turns on the red standby power light.
