shortpin to turn a motherboard on

Discussion in 'General Electronics Chat' started by solarium, Sep 9, 2015.

  1. solarium

    Thread Starter New Member

    Sep 9, 2015
    Hi everybody!
    I have my laptop motherboard in front of me and I'm trying to figure out how to turn it on without Power button and ribbon cable.
    There is a connector called JSW1 (switch) with 8 pins where to put in the ribbon cable. This connector has the following diagram:

    I just want to short the pins on the base of this connector in order to turn my motherboard on. But which pins? Surely the second one and then?
    Someone has told me to solder a small wire to the second pin and connect it to the ground (areas where tightening screws in the motherboard can act like ground). But I just had a small bipolar cable (like those of stereo headphones) and so I've tried with the ground of this cable (excluding the white and red wires), without soldering anything.
    I've connected one end to the nearest screw slot (for the ground pole) and the other one to the second pin (being careful not to touch the first or the third pin). But all I've got is a spark and some burn on the pin. Perhaps, the ground of my audio cable wasn't suitable for this task or perhaps a solder to the pin is needed (it would be a micro-solder and I don't have any solder for this).
    I just don't want to use a solder but find an "on-the-fly" solution to turn the motherboard on. Someone has used a flat screwdriver to shortpin (normally a couple of pins for other laptop models) but I've seen on the internet that those people use the ribbon cable to do that (perhaps to avoid sparks and burn on the pins located on the base of the connector).
    Any idea about this issue?