Our activpanel was working but suddenly the screen turned black and the power led stayed green. none of the buttons on the side do anything when the screen is black. When the power button is pressed the panel turns off and the led turns red but upon powering on again the screen stays black.
when the Panel is unplugged and the power button held for 15 seconds the panel turns back on for about 10 minutes before the screen turns black again.
is there anything that can be done to resolve this issue?