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  • #4001987

    Power is not always to Power SW pins.

    by dianoban99 ·

    The on/off switch on front panel works only sometimes. Try to short-start my PC. There is not always power on Power SW pins. Sometimes there is. Other times there no. Have tested the PSU. It supplies power.

    Why there is not always power on the Power SW pins?
    Help, please.

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    • #4002070

      Reply To: Power is not always to Power SW pins.

      by birdmantd ·

      In reply to Power is not always to Power SW pins.

      I can only speculate, but it could be a failing power supply that needs to be replaced. Have you tested the connections with an electrical meter? How old is the computer? Is it still under warranty?

    • #4002165

      Causes I’ve run into.

      by rproffitt ·

      In reply to Power is not always to Power SW pins.

      The question is: Why there is not always power on the Power SW pins?

      This has a few sources.
      1. The standby +5V on the PSU has failed. Rare but happens. A Volt meter is used to see if +5V standby is up on the motherboard power connection.
      2. The motherboard has a failure. Swap boards and re-test.
      3. A little bit rare but seen as you work hundreds of PCs is a low or dead CMOS battery. Your new techs won’t know this so take it gentle on them. It’s a cheap part often overlooked by the new tech.

    • #4006751

      Reply To: Power is not always to Power SW pins.

      by techguy98 ·

      In reply to Power is not always to Power SW pins.

      Plug the PSU power cable into a wall socket or surge protector, and turn on the computer. Most power supply models have a light on back of the unit that glows when it’s powered on. If it doesn’t light, try a different power cable and a different socket to eliminate those items as the source of the problem.1–

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