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Power On issue - One button Start
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jhabers:

--- Quote from: mountain on May 08, 2008, 02:48:49 pm ---
--- Quote from: jhabers on May 05, 2008, 08:52:19 pm ---
--- Quote from: thatitalian on April 30, 2008, 12:35:07 pm ---I have a Dell GX270 Small Frame Factor desktop.

I have opened her up to wire (splice) the power on button to a push button for my arcade machine to power the computer on.

Low and behold, the power on button on the desktop is wired using a ribbon cable to this mini control panel (which has front usb and sound on it) which is then fed into the motherboard using another ribbon cable. :banghead:


Does anybody have any suggestions how I can wire this thing up so that I can power it on with one button start?

The computer will be plugged into a smart strip which will kick start the monitor and marquee light.

Thanks.

--- End quote ---

I know this is off topic but I saw gx270 and I have dealt with many of those in the recent years. When you get a chance check your capacitors around the CPU for bulging. This line is notorious for caps going bad. You can still call dell for a free replacement board if your are going bad.

Here is a pic of a bulging cap, and the second is a really bad one where they started leaking

gx270 and 280's had this problem, if you have this computer may be worth it to check it out



--- End quote ---

Are you sure? I was given a dead GX270 a few months back and looked into that after researching and finding out about the bad cap issue. That expired in February if I remember correctly. I just bought and replaced all 13 caps and it works great now.

--- End quote ---
 

I guess it depends who you get on the phone and how much you complain.  I go through my dell rep so he handles it all for me
Zobeid:
My ugly gob of solder shames me. . .   I'm pretty rusty with a soldering iron.  But it does work:



You can see the main trace that runs all around the PCB is the ground.

thatitalian:
Your board looks slightly different to mine.

I'll post some pictures up of mine as soon as I get home.

How is it connected to your push button?

What parts did you actually apply solder to on the board?
Zobeid:

--- Quote from: thatitalian on May 09, 2008, 07:01:38 am ---How is it connected to your push button?  What parts did you actually apply solder to on the board?

--- End quote ---

The red and green wires, they lead to my pushbutton. . .   Short them together and it starts up -- or shuts down, as the case may be.  The green wire is soldered to the ground trace and the red is soldered to a leg of the tiny pushbutton.

Really, if you aren't sure then just look at the tiny pushbutton on the PCB.  You can solder both wires to its legs.  All you're doing is replacing its function with your own button.

DaOld Man:
Nice work, Z
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