What is the reason why the soldering iron is not hot after being energized?
Soldering iron power is not hot is generally the power cord off or the soldering iron heart line broken. Encounter this fault can be used multimeter R × lkn block measurement of power plug ends, if the multimeter pointer does not move, that there is a broken circuit fault.
First of all should check the plug itself whether the lead is disconnected phenomenon, if not, you can remove the rubber wood handle, and then use the multimeter to measure the two leads of the iron heart, if the multimeter pointer is still not moving, that the iron heart is damaged, should be replaced with the iron heart. 35W endothermic soldering iron heart between the two leads of the resistance value of 1.Skfl or so, if the measured resistance is normal, then the iron is a good heart, the failure occurs in the power supply leads and plug itself, most of the fault is the power supply lead and plug itself, most of the fault is a broken circuit. And the plug itself, most of the fault for the lead break.
Replacement of the soldering iron heart should be new with the specifications of the soldering iron heart inserted into the connecting rod, the lead is fixed in the fixed screws, and tighten the joints
Line column, at the same time to note the confusion of the soldering iron heart lead excess cut off to prevent the two leads short circuit.
Soldering iron: an electronic production and electrical maintenance tools, generally by the soldering iron head, soldering iron core, shell, wooden handle, power leads, plugs and other parts of the composition, the main purpose is to weld components and wires.
The working principle of the soldering iron: after connecting the power supply, through the soldering iron core resistance wire heat, passed to the iron head, by the iron head melting solder for work.
Soldering iron is not hot, the main reason may be the soldering iron head in the resistance wire burned off, this is the soldering iron in the wearing parts, change a soldering iron core can be. But also can not rule out the power cord, plug failure. So meet the soldering iron is not hot, to first use the multimeter to check the power plug, power cord, exclude and then check the soldering iron core!
