What could have caused this to happen?

[Clbell]

Just had the starter replaced. Took pontoon out this weekend and wasn’t on the water ten minutes before no power! Anyone know what could have caused this?

 

[Faztbullet]

Rectifier failed...bad terminal connection at battery if battery selector switch, bad cell in battery, loose battery connections, bad connections at rectifier

 

[Dukedog]

bullet connectors are notorious for over heating when under a constant load....

 

[Clbell]

Thank you both

 

[QBhoy]

Bad or failed route to earth…or any other larger load or power demanding component…like regulator, coils…starter or trim motor. Relay perhaps too. Time for some fault finding with a multimeter