[DM] [DM11] Es75 mfd randomly reboots

[Art20c]

Hi, my es75 mfd recently started to randomly reboot. It goes dark momentarily then it goes to its initial screen (lighthouse screen), then comes back to the screen it started rebooting from. 12 volt is supplied to mfd via the same power cable as to my other instruments (wind, depth, speed and autopilot). When mfd reboots all other instruments continue to work, so I guess it’s not a power supply issue. The screen when I have to press "I agree" button after lighthouse initial screen (the usual procedure after initial start up) is omitted when mfd does it’s sudden reboot. It does that in different places at different times. What could be the problem?