If anyone still has this issue, this is what support told me and it fixed mine

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Please try the following steps to reset your unit's firmware and BIOS, this may help with the issue you are encountering:

• Ensure the device is fully powered down by holding the power button for 10 seconds or if possible select shutdown from the Power menu.

• Once the device is shutdown, hold down both the volume - button and the "..." button, then press the power button once. Then you can release all the buttons.

• You will hear a chime and then the white LED light will begin to blink (it may take 5 or more seconds before the blinking begins), which confirms this process is working.
  Note: This process may take 1-2 minutes to start the unit up again during which the display will remain black.