[CA] Dragonfly 4 - diplay does not light up!

[Chuck - Raymarine - Moderator]

Welcome to the Raymarine Forum MarcoDolis,

The most common cause of the reported issue is failure to hold the display's power button pressed sufficiently long enough to switch the display ON. Please click here to view a FAQ addressing this subject. Should you have addressed the item in the referenced FAQ (to include testing its power/transducer cable for power at the cable's plug) and should the problem persist, then it would unfortunately appear that the Dragonfly display, has suffered a failure necessitating that the display be sent to Raymarine’s Product Repair Center to be bench checked / serviced.