The two fuses shown here can be Desoldered and replaced if needed.

Test the fuses by using a multimeter to probe the resistance between the pairs of pins (shown in green) on the underside of the circuit board. Working fuses should be near zero resistance. Broken fuses will show 'infinite' resistance.

Neither fuse was blown in my unit, so the problem was elsewhere. These fuses seem more likely to prevent a fire and may not save the charger from overload damage. Your milage may vary...