Chosen Solution
I have an UN60H6350AF Smart TV that when pressing the power button the red light blinks 5 times and goes out. I have opened up the TV and when I unplug the main board from the power supply I see the LED light come on. Makes me believe the power board is fine. How do I determine if I need to replace or fix the Main Board or T-Con Board? Thanks in advanced.
I replaced the Main Board and everything worked! Thanks.
@masterethan it’s a bit like guessing. I would check to see if you have power on the BL-En on your connector. That is the power to enable the backlight by the power board. If you have that then it is most likely the t-con board. Check the fuse on the t-con board for continuity and voltage. You should get ~12V on that.