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The tv has a flashing red light the tv turns on the back lights flash on and off I changed the main board and the power supply both with brand new parts can someone please help me out
Hi @jdenny7108 Try the following: Turn off the TV if on and then disconnect the power from the TV. Remove the back cover and then disconnect the cable between the mainboard and the power board. Reconnect the power to the TV. The backlights should turn on full and stay on. There will be no picture because the mainboard is disconnected. If the backlights flash on and off it is either a backlight problem or a power board problem. Since you have replaced the power board then most probably it is in the LED strips somewhere. You will have to check for a loose connection between the power board and/or in the LED array or for faulty LEDs. There are videos on YouTube that show how to test the backlights. It is easier if you have a backlight tester - examples only. Be safety aware when working in the back of a TV as there is exposed lethal AC voltage on the power board when the power is connected
