Dell Dimension 3000 dead

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skinthegoat

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Nov 19, 2011
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My trusty old (5 years or so) Dimension has finally sat down on me. Fails to power up to the point where BIOS talks to display. Power light on front of cabinet is solid amber. Have tried swopping/reducing memory, removing all option cards, removing all disks, DVDs, &c. All voltages measure OK on P1, except for pin 14 (PS_ON), which reads zero. Pin 8 (POK) reads 5.1V, but of course, I've no idea what these would be were the darn thing working. At no time do any of the four LEDs at the rear show any signs of life. Anyone out there got any ideas? I'd hate to buy a PSU and then find it was the motherboard. Although I worked on computers (large systems - yes, I know, I'm a dinosaur!) before I retired, I'm no expert now; but my shakey hands are still capable of holding a voltmeter.
 
Joined
Nov 21, 2004
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2,536
PSUs are usually built to a standard form-factor and have standard screw-hole positions so buying one needn't be a total waste of money if it turns out to be something else (unless Dell machines require a proprietary PSU of course, that wouldn't surprise me). I stopped buying branded computers several years ago - I have mine built locally. No nasty surprises with parts - they are all standard fitting.
 

skinthegoat

Thread Starter
Joined
Nov 19, 2011
Messages
2
Thanks guys, I think I may have to invest in a PSU and try it. As I said, I never get as far as the diagnostic lights, and what the service manual says about the power light was of no help - it suggested swopping/replacing the memory, which I'd done to no avail. Thank you both for your responses.
 

flavallee

Frank
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May 12, 2002
Messages
83,274
You're welcome, and good luck. :) (y)

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