How to Check an eMachine When the Cooling Fan System Has Halted

Written by jennifer moore
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How to Check an eMachine When the Cooling Fan System Has Halted
An eMachine cooling fan issue may actually be a power supply issue. (Computer Cooling Fans image by cdbdi from

When an eMachine cooling fan stops working, it may need to be replaced, or the issue could be power-related or caused by dust caught in the fan. Before replacing the fan, troubleshoot the problem to make sure it is not related to the power supply, as eMachines have a known power supply problem.

Skill level:

Things you need

  • Compressed air
  • Phillips screwdriver
  • Cooling fan replacement
  • Power supply replacement

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  1. 1

    Disconnect the power cord from the computer and look for dust in the fan.

  2. 2

    Blow canned compressed air into the machine. You can find canned compressed air in any local electronics store. Blow out the fan thoroughly to remove all the dust from the fan, motherboard and interior of the computer. Spray the compressed air in spurts of 5 to 10 seconds.

  3. 3

    Disconnect the fan connector by gently pulling up on the plug. Blow air into the connector plug.

  4. 4

    Reconnect the fan plug and replace the power cord. Turn on the machine to see if the cooling fan starts up again.

  5. 5

    Replace the cooling fan if it was extremely dirty and still does not turn on. Dust and dirt can cause the cooling fan to malfunction.

  1. 1

    Check for any other signs that may indicate a power supply issue. Look for computer freezes, start-up issues, spontaneous rebooting, hard disk drive and fan failure --- problems that cause the system to reboot. Any of these symptoms indicate a failing power supply and it needs to be replaced.

  2. 2

    Turn the computer around to get close to the power supply and search for a burn odour. Turn on the machine and look for a small amount of smoke from the power supply. This smell of smoke is an indication of a failing power supply. Replace the power supply.

  3. 3

    Measure the output voltages with a digital multimeter. Disconnect the power cord from the power outlet. Remove the screws that hold the computer's right-side panel and slide the panel off. Insert the multimeter pin into the back of the power supply connector that plugs into the motherboard. Slip the pins in the holes behind the wires. Reconnect the power cord to the power outlet. Each coloured power wire should have a different voltage reading. For instance, the red wire should read for 5v, yellow for 12v, white for -5v and blue for -12v. The black wire should not give a voltage reading because it is the ground wire. Verify this in your computer manual and check the digital meter screen for the appropriate voltage readings. If there is a fluctuation in voltage, the power supply needs to be replaced.

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