The refregerator after rain storm got a message of power failure. I unplugged the fridge. Reconnected. It worked normal. I was happy. But after a out 6 hours the power failue message showex up with beeping. The wall outlet connection was fine. I unplugged power cord try connecting power. The power failure will show up with the display window and beep. I turn off beeping. The fridge will turn off on its own and restart by itself but the power failure message will beep. This about one minute cycle will continue unlimited number of times. Finally it will end up with CE error. The way out of that was unplug fridge wait a few minutes and plug back. This process some times will start fridge OK. Testing functions 33 power supply failed. Changing power supply board worked. It was not so hard.