무엇 이유 이유 이유 전기 납땜 철 아니오 가열 업 후 존재 전원 켜기
Firstly, check if there is an open circuit in the lead of the plug itself. If not, remove the bakelite handle and use a multimeter to measure the two leads of the soldering iron core. If the multimeter pointer still does not move, it indicates that the soldering iron core is damaged and should be replaced. The resistance value between the two leads of a 35W internally heated soldering iron core is about 1. Skfl. If the measured resistance value is normal, it indicates that the soldering iron core is good. The fault occurs in the power lead and the plug itself, and most of the faults are due to open circuit in the lead.
When replacing the soldering iron core, a new soldering iron core of the same specification should be inserted into the connecting rod, the lead wire should be fixed on the fixing screw, and the wiring post should be tightened. At the same time, attention should be paid to cutting off the excess part of the soldering iron core lead wire to prevent a short circuit between the two leads.
The electric soldering iron is not hot, and the main reason may be that the resistance wire in the soldering iron head is burnt out, which is a vulnerable component in the electric soldering iron. Just replace it with a soldering iron core. But it cannot be ruled out that there are faults with the power cord or plug. So when encountering an electric soldering iron that is not hot, you should first use a multimeter to check the power plug and power cord, and then check the soldering iron core after troubleshooting
