What to do if DC equipment does not function on my Marquis 690?
- RRobert HardingAug 2, 2025
If the DC equipment on your Marquis Boat isn't functioning, several issues could be the cause. First, check if the battery master disconnect switch is in the OFF position and turn it ON. Next, ensure that all appropriate circuit breakers on the DC breaker panels and the DC Control Center are switched ON. A weak or dead battery can also cause this problem, so apply power to and activate the appropriate battery chargers. Finally, inspect the DC system for any loose or disconnected wires and repair them.