How to repair the soldering iron when it is not hot after being powered on
(1) When the soldering iron is powered on and the tip is not hot, it is usually due to the power cord falling off or the soldering iron core wire breaking. In this case, the R × lkn range of the multimeter can be used to measure the two ends of the power plug. If the multimeter pointer does not move, it indicates a circuit breaker fault.
(2) First, check if there is any open circuit in the leads of the plug itself. If not, remove the rubber handle and use a multimeter to measure the two leads of the iron core. If the multimeter pointer still does not move, it indicates that the iron core is damaged and should be replaced.
(3) The resistance between the two leads of the 35W internal heating soldering iron core is 1. If the resistance value of Skfl is normal, it indicates that the soldering iron core is in good condition. The fault occurs in the power supply lead and the plug itself, and most faults are open circuit leads. 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.
Repair methods for electrified iron heads
(1) The reason for the charging fault of the soldering iron tip is not only that the power cord is misconnected to the grounding wire terminal, but also that when the power cord falls off from the soldering iron core terminal and touches the screw of the grounding wire, it causes the soldering iron tip to be charged.
(2) This type of malfunction can easily cause electric shock accidents and damage electronic components. To prevent the power cord from falling off, it is necessary to regularly check whether the wire pressing screw on the handle of the soldering iron is loose or missing. If it is loose or missing, it should be promptly replaced.
