Talk:Raspberry Pi MagicMirror
I found a header pin on the display board that controls the power to the display. Very useful to power down the display if you want to use a motion sensor or timer or similar to wake up the magic mirror.
Looking at the board, with the LED display facing you, the header is on the bottom left (it is where the touch film and front button board connects). The pin for display power is 3rd from the right or 8th from the left, top row (just above the 'H' in 'TOUCH')
The pin needs to be brought to ground briefly to toggle LED power on and off.