Question about Dell Dimension 4500 PC Desktop

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Dell Dimension 4500 has been working fine but won't start now. No fan, no power when press power switch. Have taken front panel off, and switch seems okay. How to check power supply?

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The problem with your Dell Dimension 4500 is that its power pack (the device that supplies power to the mother board) is bad. The only solution is to replace it (Though sometimes it could be fixed, my recommendation is get a new one, the price to fix and getting a new one are about the same anyway). To do this you need technical support unless you are a technical person. The fact is it is a very simple procedure. But to be sure that nothing goes wrong or another complication doesn’t arise you need a technical person to change the power pack. However, if you a technical person and you are sure this your comfort zone, follow this procedure:-
Open up the CPU casing. Unscrew the power pack (this is the device you plug in your power cable from the back of the CPU). Take it to any computer accessories store and purchase one with the exact power specifications. Return it to your CPU, screw it back and plug in to your board and devices. 
Power on the System.

Posted on Sep 13, 2009

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There is a power supply problem. change the power supply.

Dont forget to vote fixya rating

Posted on Sep 13, 2009

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With that scenario i would recommend you check the front panel assembly where the power button is located and also have you tried to reset the CMOS from the motherboard.

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This is one of three things.

1. Bad Power Supply - Check to see if the fan is spinning
2. Short in the the wiring or Bad piece of Hardware - Check wiring make sure none of it is damaged. Disconnect one component at a time and try powering the PC on.
3.Badmother

Try steps 1 and 2 and if those do not work it is a bad motherboard.

This from a Dell certified Technician.

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Without tools or other spare components/computers, how to troubleshoot ''dead'' Dell Dimension 4500? No beeps/fan, etc. Have taken off front cover and switch seems okay mechanically. Small green light on...


With case open, and power ON...
locate the two "power" pins that were connected to the power button cable that is on the front cover.
Find them and tempoarily "short" them with a metal thingy, like a paperclip, taking care not to touch any other components. If it starts or produces a beeping code, then put it all back together and make sure the power pins are properly connected.

If it doesn't work, then perhaps the 12 volt side of the power supply is out. The mobo LED is powered by the 5 volt side of the PS.

The 12 Volt side powers heavy things, like the hard drive motor, fans, cd drives, etc.
the 5 volt side if for the data bus or circuits.

The power supply may have several "legs" of cables. If so, use only one set to see if the system works; then the other.

I hope this helps and it works!




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Might be a hard drive issue. I had the same problem with one of My desktops. I replaced the hard drive and it worked fine.

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I had the same issue with my Dell Dimension 5150 and I replaced the front I/O USB Audio Panel and it booted right up.

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Sounds like the power supply is faulting. If not it is your mother board that has failed.

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