Furuno unit will not power up


​I just put my equipment back on my boat after a winter's rest.  
The unit doesn't work.  It doesn't power up.  I measured good voltage at the power plug before connecting it to the unit.  What could be wrong?


​Check for corrosion on your in-line fuse and at your power connection.  
You may be measuring the correct voltage in a no current draw situation, however you may be losing the voltage when the unit actually tries to draw power.  
The in-line fuse may be corroded on the ends and causing high resistance in the power cable.