I have a similar issue… each time I turn on the TV, I can see a slight blue hue, which tells me the backlight is working. If I unplug it from the wall and count to 5 and plug it back in… it reboots and starts up fine. After going through this process constantly I finally added an external power switch that is easy to reach… I use this to kill the power for 5 seconds and turn it back on… it really is a shame as it is only 2 years old… I wouldn’t even know where to look for next steps on a permanent fix.