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  1. #1

    TangoCharlie's Avatar
    Member Since
    Apr 23, 2005
    Posts
    58
    Is the Mac Mini case earthed?
    Hi

    I modified my Mini and added 1Gb of memory stick. It was fun stripping down the machine and putting it back together (not!).

    However, when I took it apart I noticed a lot of earth tags.

    My Mini is up and running now and I metred it yesterday. I was surprised that the metal casing did not appear to be earthed. I put one prong on the casing and the other on an earth source, the radiator. They were not common (ie both earthed).

    Is that normal or have I re-assembled it wrongly?


    I would normally expect the casing (chasis) to be earthed to stop radio interference from getting in.

    Tc



    Thanks,
    Tc

  2. #2

    jhelm007's Avatar
    Member Since
    Oct 18, 2004
    Location
    Norfolk, VA, USA
    Posts
    629
    Specs:
    MacBook: 2GHz, 2GB RAM, 120GB HD; PowerTower Pro (300MHz G3 clone): 608MB RAM, 10GB HD
    Quote Originally Posted by TangoCharlie
    Hi

    I modified my Mini and added 1Gb of memory stick. It was fun stripping down the machine and putting it back together (not!).

    However, when I took it apart I noticed a lot of earth tags.

    My Mini is up and running now and I metred it yesterday. I was surprised that the metal casing did not appear to be earthed. I put one prong on the casing and the other on an earth source, the radiator. They were not common (ie both earthed).

    Is that normal or have I re-assembled it wrongly?


    I would normally expect the casing (chasis) to be earthed to stop radio interference from getting in.

    Tc



    Thanks,
    Tc
    It's been awhile since university physics, but I don't think that it maters whether the chasis is grounded or not to sheild RF interference. Sometimes chasis on electronix aren't grounded to prevent accidental shorts and discharges and such.

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