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IBM NetVista machine as an arcade PC

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kkingsto:
Just got my hands on an IBM NetVista machine (3ghz, 1gig of RAM and 40Gig HD).   I'm trying to figure out how to power this baby up from an arcade button like a lot of people have done.

Now, most motherboards have a 2 pin plug for a pushbutton switch.   And with this in mind, I was thinking this would be a piece of cake.

But, when I checked the guts of the machine, the button has -4- wires going into it.  Which has stumped me--why 4?

The button is also part of an LED assembly (power and HD activity LED).

Anybody have an experience with this type of setup?  The IBM partnumber for the button assembly is 37L5092.

I do not want to cut into the wires if I can help it.

Thanks

Teebor:
I think you answered your own question there.

Two of the wires are for the button and the other two are for an LED

Look on the mobo and it is usually marked on there next to where the plug goes in, if not experiment with a screw driver and shorting out those pins that were covered by the plug.  You can't do any damage so long as you only short those ones momentarily and the PC will be off anyway so the only thing that should happen is the machine springs to life :D

kkingsto:

--- Quote from: Teebor on April 04, 2007, 01:02:15 pm ---I think you answered your own question there.

Two of the wires are for the button and the other two are for an LED

Look on the mobo and it is usually marked on there next to where the plug goes in, if not experiment with a screw driver and shorting out those pins that were covered by the plug.  You can't do any damage so long as you only short those ones momentarily and the PC will be off anyway so the only thing that should happen is the machine springs to life :D

--- End quote ---

Not quite..  Button has 4 wires on it.

See the pictures.   There's 2 LED's and a button.  Total of 8 wires.   

In the first picture, the button is on the right of that assembly.

2nd picture is where the plug plugs in to the mobo.

and 3rd is the whole assembly out. 

Now, I've tested the button by using an older pushbotton and the weird thing is 2 sets of wires will power up the PC.  The Black/Yellow Yellow/Black are the 2 sets (from the left on the 3rd pic)

kkingsto:
OK Did a little playing around with this:

The first set of pins WILL shut the machine off--no delay.

2nd set of pins will shut the machine down--normal Windows shutdown.

Which brings me to the question:  Could the button have some kind of "delay" based on how long it's been pressed to power down???

bfauska:
The 4 wires should be 1 each for the button and LEDs and one common.  I don't know about the delay.  What pictures are you talking about?

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