Repair method for soldering iron that does not heat up after being powered on
1. When the soldering iron is energized and the soldering iron head is not hot, it is usually caused by the power cord falling off or the core wire of the soldering iron being broken.
Maintenance method: Use the R×lkn scale of the multimeter to measure both ends of the power plug. If the multimeter pointer does not move, it means there is an open circuit fault.
2. First check whether the leads of the plug itself are open. If not, you can remove the bakelite handle, and then use a multimeter to measure the two leads of the soldering iron core. If the multimeter pointer still does not move, it means that the soldering iron core is damaged and should be replaced. .
3. The resistance between the two leads of the 35W internally heated soldering iron core is about 1.Skfl. If the measured resistance value is normal, it means there is no problem with the soldering iron core. The fault occurs in the power lead and the plug itself. Most faults are lead wire breakage.
Maintenance method: 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 two The leads are shorted.
Repair method of soldering iron tip with electricity
The cause of the soldering iron head's electrification failure is not only that the power cord is incorrectly connected to the ground wire terminal, but also that when the power cord falls off from the soldering iron core terminal, it hits the ground wire screw, causing the soldering iron tip to become electrified.
Failure hazards: It can easily cause electric shock accidents and damage components.
Maintenance method: To prevent the power cord from falling off, regularly check whether the crimping screw on the soldering iron handle is loose or missing. If it is found to be loose or missing, it needs to be replaced in time.
