Pins for on/off switch on 291042-001

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country2

Senior member
May 1, 2001
598
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googling this tells me it the MB used in the COMPAQ EVO W4000 I found some pics but really does not show the exact pins but location is on P5 right below the IDE connector along edge of board. Hopes this helps
 
Cr0nJ0b

Cr0nJ0b

Golden Member
Apr 13, 2004
1,141
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meettomy.site
AdmiralFace said:
it does a bit... but i really need the exact pins, there are 15 pins so thats about 30000 possible combinations
Click to expand...

There wouldn't be 30000 combinations, since the pins would most likley be right next to each other. I may be wrong here, but the the standard convention is to have the 2 pins on the same side. usually they are setup in 2 and 4 pin groups. It's possbile that this would have a very specialized configuration, for which you would need a schematic pin-out...but if it were me, I would just start working the 2 pin connector around the outside. That's 8 combinations to test. There's likely a way to check the voltage with a vMeter. You could establish which are live and which are ground and the voltages of each...from that you could deduce which is the likely power circuit...
 
aigomorla

aigomorla

CPU, Cases&Cooling Mod PC Gaming Mod Elite Member
Super Moderator
Sep 28, 2005
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take a full picture of your board.

we can probably help you circle which is which if we can tell.

but it would be easier with a picture of your board.
 
AdmiralFace

AdmiralFace

Member
Oct 13, 2010
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mobpcp.blogspot.com
I would've taken more but my cam spazzed


IMG00068201011180715.jpg



I know it's not great so heres a rough diagram:
o=pins
-=no pin

______________1
[ o o o o o o o o o ]
[ o o - o o o o o o ]
 
B

Ben90

Platinum Member
Jun 14, 2009
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Just grab something that conducts electricity, such as your keys, and start touching things together. The pins will be next to each other on the same row. You won't break anything by doing this.
 
Gillbot

Gillbot

Lifer
Jan 11, 2001
28,830
17
81
Ben90 said:
Just grab something that conducts electricity, such as your keys, and start touching things together. The pins will be next to each other on the same row. You won't break anything by doing this.
Click to expand...

I typically run a screwdriver down the middle of the rows. That will give you a general idea where they are, then you can narrow it down.
 
L

Lonyo

Lifer
Aug 10, 2002
21,938
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Take a pic from the other angle so that the words next to the pins are visible.
 
AdmiralFace

AdmiralFace

Member
Oct 13, 2010
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mobpcp.blogspot.com
KHGamez said:
PB = Power Button

LED = Power LED
Click to expand...

yeah i got that, its in bold lettering indicating the 17 or so pines beneath it are for the power button and various LEDs.

I've ran a screwdriver down the middle, in fact I've run three 'drivers down the middle and no luck, I've checked with a multimeter and there are voltages so the board isn't completely at fault and the PSU works.

I've found out some more information if it helps, its a system board from an HP Xw4000 workstation.
I've also looked at a few other related threads and it seems that this board had a ribbon cable connecting system board to front panel, making it hard to differentiate between pins, also negating the need to know pin assignments if you have the correct cable, which i do not.
 
Last edited:
B

bbb19bx3

Junior Member
Dec 8, 2010
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0
0
This is how my EVO W4000 motherboard is connected.

17 15 13 11 9 7 5 3 1
o o o o o o o o o
o o - o o o o o o
18 16 14 12 10 8 6 4 2

1 Power LED +
2 HDD LED +
3 Power LED –
4 HDD LED –
5 .
6 Power Switch +
7 .
8 Power Switch –
9 .
10 .
11 .
12 .
13 .
14 .
15 .
16 .
17 Connected to 18
18 Connected to 17
BBB
 
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