1) The resistance value between the plug pins is different from the resistance
value in the table, disassembly the soldering iron to confirm whether the resis
-
tance value of the PCB is correct.
2) The measured resistance value on PCB is correct, indicate that the soldering
iron wire is damaged, refer diagram to check the wire connect situation as below.
3) The resistance between the 3 pin of the plug and the soldering iron tip is greater
than the table value, wipe the point of junction where oxidized with sandpaper.
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