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motherboard affected by magnetic field?

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  • motherboard affected by magnetic field?

    I've just installed a 15" subwofer in a custom fiberglass box, with the amps on the sides and the carcomputer on the middle. But when i finished with the whole project, the computer didnt want to turn on. Do you guys think that the magnetic field could done anything to the motherboard?, I've tested the power supply and it turns on with the tester and another motherboard. The magnet is aproximatelly 10 - 15 inch away from the motherboard.

    Please help.

  • #2
    Is the hard drive near the motherboard?

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    • #3
      I can't speak for motherboards, but hard drives are affected by magnetic fields. When even installing a hard drive you should try to avoid using magnetic screwdrivers or anything of that nature near it. In the future, I would consider mounting it a very reasonable distance away (multiple feet) given that the magnets on subwoofers are sometimes quite strong depending. Just as a precautionary measure.
      Tucka Tucka

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      • #4
        Originally posted by dbenitez
        I've just installed a 15" subwofer in a custom fiberglass box, with the amps on the sides and the carcomputer on the middle. But when i finished with the whole project, the computer didnt want to turn on. Do you guys think that the magnetic field could done anything to the motherboard?, I've tested the power supply and it turns on with the tester and another motherboard. The magnet is aproximatelly 10 - 15 inch away from the motherboard.
        It's very unlikely that the subwoofers damaged your motherboard. It's more likely to be a power issue.

        Originally posted by semovodka
        I can't speak for motherboards, but hard drives are affected by magnetic fields. When even installing a hard drive you should try to avoid using magnetic screwdrivers or anything of that nature near it. In the future, I would consider mounting it a very reasonable distance away (multiple feet) given that the magnets on subwoofers are sometimes quite strong depending. Just as a precautionary measure.
        I've used screwdrivers with magnetic bits of varying strengths (on both manual and electric drivers) on hard drives in PCs for over a decade with nary a problem.
        While it's true that hard drives use magnetically-charged particles, the magnetic field put out by a screwdriver isn't strong enough to affect them through the hard drive's outer casing.

        Your asertation, semovodka, is false.
        Have you looked in the FAQ yet?
        How about the Wiki?



        Under normal circumstances, a signature would go here.

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        • #5
          well, ive tested another motherboard and the power supply works fine, im going to move the processor and the memory and c if boots, that will tell me if only the motherboard got messed up.
          Thanks for your time and help.

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          • #6
            well, everything seems to boot, so i think the motherboard got messed up, it seems that magnetic field do affect the motherboards so becarefull.

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            • #7
              wich motherboard do u guys recommend for a p4 2.4Ghz i need at least 2 pci ports and 4 USB

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              • #8
                Originally posted by dbenitez
                wich motherboard do u guys recommend for a p4 2.4Ghz i need at least 2 pci ports and 4 USB

                Next question would be what PSU you'd need...or how many with that cpu?
                Renault Megane...the OEM look

                The Lost in Europe Ford Escort

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                • #9
                  Originally posted by dbenitez
                  well, everything seems to boot, so i think the motherboard got messed up, it seems that magnetic field do affect the motherboards so becarefull.
                  I'm willing to bet that it wasn't the magnetic field from your subwoofers that toasted your motherboard.
                  There's something else in play here that we don't know about.
                  Have you looked in the FAQ yet?
                  How about the Wiki?



                  Under normal circumstances, a signature would go here.

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                  • #10
                    DarquePervert:

                    I have, in the past, witnessed a magnet screw driver damage a hard drive. The drive was working fine, the person was putting in additional screws to secure the hard drive better in place as he had previously only had 2 screws holding the HD as opposed to 4, and it was tilted a bit. After doing so the hard drive would not come on. The computer would come on, but the hard drive was scewed. Granted I guess it could have been other things that had accounted for this, as yes, I in the past have used a magnetic screw driver to take out my hard drive etc until this particular incident. However, there is no point in taking the chance. I am fairly confident in that case it was the screwdriver that caused it, there was no other explanation unless the drive randomly decided to die at that point?

                    Edit: Forgot to add, the magnetic screwdriver he was using was not electrical. It was just the old fashion style for the record.

                    Also I did find this that backs your assessment up DarquePervert:

                    02-11-2003, 01:46 PM
                    Hard drives are shielded, and the magnetic power required to damage any of the ICs/CMOS chips in the system is far above what is found in a normal hand tool.
                    Tucka Tucka

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                    • #11
                      Correct me if I'm wrong, but don't subwoofers have slightly stronger magnets?

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                      • #12
                        A very strong magnet can effect a motherboard. Any inductor will end up with a different inductance. And usually, inductors are around any dc level shifters.

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