No. If you have 3 batts and 3 batts are attached to the charger, when plugged in you should at least get a green light if the battery is charged. If 1 bank is not lighting up in any way, it is time to buy a new charger.
Capt. Craig Copeland
2013 Nautic Star 2110 Shallow Bay Boat
Humminbird HELIX 12 CHIRP MEGA SI GPS G2N
Nautic Star Boats Pro Staff (nauticstarboats.com)
Redneck Fish'n Jigs Pro Staff (redneckfishn.com)