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Rewire a power button

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3 replies

by crx

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I have an Emachine T2984. The 2 wires (black and white) have been disconnected from the power on/off button. The back side of the button has 4 "prongs" on it. Which ones do I use to reattach these wires and is soldering the best method?

3 replies

by maniacman

Also, to determine which 2 of the 4 prongs to use, I suggest you use a multimeter to determine current continuity to test which 2 prongs make up a single circuit. If you don't know what I'm talking about, I suggest you not proceed, as this requires some basic knowledge of electric circuits and possibly soldering skills.

by oh smeg

But generally speaking you use 2 of the terminals on the opposite sides of the switch and at the same level. These switches need to show no resistance when on and complete resistance when off.

You also need a Low Powered Electronics Soldering Iron to do this with as the bigger Soldering Irons will destroy the switch by overheating it and causing it to fall apart.

These are contact switches which are press to complete the circuit. If you do not test the switch you will not be able to make it work as you will have picked the wrong contacts to connect to.

Col

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