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, if not, then you can remove the rubber wood handle, and then use the multimeter to
Measurement of the iron heart of the two leads, if the multimeter pointer is still not moving, that the iron heart damage, should replace 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 value is normal, then the iron heart is good, the failure occurs in the power supply lead and the plug itself, the majority of failures for the lead circuit breakers.
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 fixing screws, and tighten the terminal, at the same time to note that the soldering iron heart lead to cut off the excess, in order 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!
