What to do if the generator set is not charged when charging

The manufacturer believes that this problem may be caused by damage to the fuse or rectifier diode. When the fuse is blown, the power indicator light of the charger does not light up; when the rectifier diode is damaged, the power indicator light of the charger is on, but there is no DC output. 1. The charger transformer is burned out. 2. The diode on the charger is burned out. 3. The charging ammeter of the charger is damaged. 4. The charger's fuse is burned out. The method to troubleshoot the fault is: disconnect the connection line between the charger and the battery, use a multimeter DC voltage barrier (50V) to test the voltage between the two output terminals of the charger. Note that the red meter pen is connected to the positive electrode of the charger, and the black meter pen is connected to the negative electrode, and there is no voltage output. Remove the charger housing and inspect the charging insurance core. It was found that the 60A safety core was burned out. After replacement, the charger resumes normal charging and the fault is eliminated.