Repair method for soldering iron not heating up after being powered on
(1) When the electric soldering iron is powered on, it is found that the soldering iron head is not hot, usually due to the power cord falling off or the soldering iron core wire breaking. In such a situation, the R × lkn gear of a multimeter can be used to measure the two ends of the power plug. If the pointer of the multimeter does not move, it indicates an open circuit fault.
(2) First, check if there is any open circuit in the lead of the plug itself. If not, remove the rubber handle and use a multimeter to measure the two leads of the soldering iron core. If the pointer of the multimeter still does not move, it indicates that the soldering iron core is damaged and should be replaced.
(3) The resistance value between the two leads of a 35W internally heated soldering iron core is 1. Around 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 faults are caused by a broken lead. Need to replace the soldering iron core, insert a new soldering iron core of the same specification into the connecting rod, fix the lead on the fixing screw, and tighten the terminal. At the same time, be careful to cut off the excess part of the soldering iron core lead to prevent short circuit between the two leads.
2. Maintenance methods for charged iron heads
(1) The reason for the live fault of the soldering iron head is not only due to the wrong connection of the power line to the grounding wire terminal, but also because when the power line falls off the soldering iron core terminal and touches the screw of the grounding wire, it causes the soldering iron head to become live.
(2) This type of malfunction can easily cause electric shock accidents and damage components. To prevent the power cord from falling off, it is necessary to regularly check whether the pressure screw on the electric soldering iron handle is loose or missing. If it is loose or missing, it should be matched in a timely manner.
