How to deal with leakage from the soldering iron
1, the first multimeter adjusted to the AC voltage block, the black pen grounded, the red pen connected to the head of the soldering iron, observe the multimeter readings, if there are readings, proving that the soldering iron has a leakage, need to be repaired.
2, the soldering iron for disassembly, looking for the internal grounding mark, and then along the grounding line to find the circuit board connected to the resistor, and measure its resistance, more than 5 ohms is judged to be burned need to be replaced (leakage of the vast majority of cases are damaged resistance), in addition to the resistance value is normal, please confirm that the soldering iron plug contact is good.
3, the burnt resistor removed, replace the new resistor, note that the resistance value of this resistor although 0 ohms, but he played a protective role, can not be short-circuited here!
4, after the replacement is completed, use a multimeter to confirm the resistance value between the resistor's far-earth measurement and ground.
6, after the completion of the repair and then use a multimeter on the soldering iron head and ground between the resistance value to confirm, if the resistance value within 2 ohms, proving that the repair is successful.
