Prokit's Industries SS-207 - Manual (Page 8)

Heating Element Broken
Disassembling the Unit
1. Turn the nut 1 counterclockwise and remove the tip enclosure 2 , the tip 3 .
2. Turn the nipple 4 counterclockwise and remove it from the iron.
3. Pull both the heating element 6 and the cord assembly 11 out of the handle 12. (Toward the tip of the
iron.)
4. Pull the grounding spring 5 out of the D-sleeve.
Measure when the heating element is at room temperature.
1. Resistance value of heating element (resistance between the 2 red lines) 11-16Ω
2. Resistance value of sensor (resistance between white line and blue line) 0.5Ω-1. 5Ω
If the resistance value is not normal, replace the heating element.
Two ways of checking negative pole and positive pole of the sensor:
1. Touch the two sides of sensor with a magnet, the side that emits antimagnetic is the positive side.
The side does not have any magnetism is the negative side.
2. Heats up the heating element by hot water or fire, check the electric potential between 2 leads of sensor
by multimeter in mV measurement, if the meter display positive mV sign, the red test lead side should
be the positive side of sensor.
Replace the Heating Element.
(1) De-solder the damaged heating element leads and remove it.
(2) Replace a new one and solders to PC board properly.
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