3 Bank Charger loud buzzing sound

[dcbassman]

My Minn kota 3 Bank Charger started making a loud buzzing sound sometime over night. I heard it this morning and unplugged it. Is it fried or on it's last leg?

dc

[Lou r Pitcher]

Might be 120hertz transformer noise caused by the glued laminate seperating the windings loosening.

Hard to predict outcome as that can soon result in the wire in the winding's breakage/failure or they may can buzz away and only be a nuisance.

When it does fail, usually it just opens the transformer and unit goes dead as if you unplugged the power cord. My 1st Dual Pro charger buzzed away loudly for years and never failed.