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Hacking a power button on a PC
quarterback:
--- Quote from: Peale on August 18, 2005, 08:42:03 pm ---If you want the power on your computer to come up when you power up your cab, you can attach a 10uf 16v capacitor to the power on pins.
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Pik4chu:
--- Quote from: quarterback on August 20, 2005, 12:27:09 am ---
--- Quote from: Peale on August 18, 2005, 08:42:03 pm ---If you want the power on your computer to come up when you power up your cab, you can attach a 10uf 16v capacitor to the power on pins.
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Pik4chu:
--- Quote from: mrracer on August 19, 2005, 09:46:37 pm ---Hey Pik4chu, I appreciate the response. I cracked the Dell open (pretty difficult to take out the plastic casing I might add, ended up braking one of the tabs off) and finally got to the power button, unfortunately in this particular model I guess there are no wires to trace to the mobo it's soldered on the a board and the only thing I can trace back are the 2 ribbons attached too it. Trust me I much take that route much simpler for me. But undoable... That's why I've been looking at your other alternative, which I'm ready to try but I just want to make sure i do it right. If I understand you correctly I would run one wire from the green wire to my push button and a common black wire to the push button as well, is this correct. Sorry I wound repetitive, but like I mentioned before I don't want to fry the mobo since this is my first time actually trying something like this. Thanks again.
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ok, its one of those models.
hmmm does the connector look like this? http://www.broadbandreports.com/r0/download/379959~1887fd19525860a4b51fa4e62353e6aa/thesolutionmaybe.jpg or is it bigger?
Also, look on the mobo for an Intel part number and you can likely find hte pin-outs on intels site using that. I am obviously trying to avoid shorting the green wire solution as much as possible, Because while it works great w/o a mobo, havent (needed to) used it all that much with a working motherboard.
mrracer:
I opened the link but no picture? I took a look at the Intel site for the E210882 mobo no luck yet. So I took some pics and wrote comments on it, hope this helps, thanks again.
SirPeale:
--- Quote from: Pik4chu on August 20, 2005, 12:46:20 am ---
--- Quote from: quarterback on August 20, 2005, 12:27:09 am ---
--- Quote from: Peale on August 18, 2005, 08:42:03 pm ---If you want the power on your computer to come up when you power up your cab, you can attach a 10uf 16v capacitor to the power on pins. Just make sure and meter it first to see which pin is '-' and which is '+'.
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Why does this work? What's the cap doing exactly?
Thanks
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As far as I can tell it doesn't unless he is assuming you are powering your cab with the same psu as your computer, even then it doesnt sound right...
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Ah, the dissenting voice of inexperience. It does work, and works well. I've done it on several cabinets now.
A capacitors uncharged state is shorted. So when you turn on the power to your cabinet, the cap shorts out the power on pins momentarily. After it charges, the capacitor becomes open, allowing the board to boot. You have to use a *very* small capacitor (ie 10uf) for this to work. You also have to get the polarity correct, so you have to measure the pins on the motherboard to see which pin is negative and so on.
As for 'powering the cab with the same PSU as the computer' well...what else is powering the cab? A gaggle of hamsters on wheels? You're getting the power from the PSU to power the computer and perhaps some 12V lights, but power for the monitor and marquee better be coming from mains power.