Generic AC adaptor causing touchpad problems

Discussion in 'MacBook Pro' started by 262Runnr, Jan 23, 2013.

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  1. 262Runnr, Jan 23, 2013

    262Runnr macrumors regular

    262Runnr

    Joined:
    Jul 21, 2008
    Location:
    NC
    #1
    I purchased a second generic AC adaptor on Ebay so I wouldn't have to keep moving my Apple adaptor from room to room. I noticed that my touchpad was acting erratic. After a couple of weeks of this behavior, I decided to ditch the generic adaptor, which I was using frequently, and only use the Apple AC adaptor.
    My problems with the erratic touchpad seemed to have disappeared...and hopefully will stay gone :). Could the generic adaptor really have been the issue and caused the erratic touchpad problems?
     
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  2. RiseDarthVader, Jan 23, 2013

    RiseDarthVader macrumors member

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    Aug 5, 2012
    #2
    You should never cheap out on the power supply. As a weak or poorly made PSU can kill the rest of the components in a computer.
     
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  3. Binomio, Jan 23, 2013

    Binomio macrumors member

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    #3
    It is electrical interference, I had a third party ac adapter and it did the same thing with my trackpad and my tv nearby.
     
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  4. Ploki, Jan 23, 2013

    Ploki macrumors 68040

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    #4
    power supply = important.
    unfortunately chinese knock-offs don't cut it.
     
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  5. Brian Y, Jan 23, 2013

    Brian Y macrumors 68040

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    #5
    Check if it's grounded. Using an ungrounded adapter (including the short plug with Apple's own PSU) can cause trackpad issues.
     
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  6. 262Runnr, Jan 23, 2013

    262Runnr thread starter macrumors regular

    262Runnr

    Joined:
    Jul 21, 2008
    Location:
    NC
    #6
    I'm using the Apple short plug and it seems to be working fine. I stopped using the generic and haven't had any issues since then.
     
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  7. randynlisa, Dec 12, 2017

    randynlisa macrumors newbie

    Joined:
    Dec 28, 2013
    #7
    --- Post Merged, Dec 12, 2017 ---
    So I tried a test. I have a none apple power adapter and tried it on two Mac airs. one is a 2014 and one is a 2015. they both started acting crazy the minute I plugged it in using this power supply. The minute I went back to the apple it stop. then I tried changing the sort plug one with the long plug on the none apple and got the same results. then I just wrapped my hand around the connector and wire where it plugs into the MacBook and it mostly stoped jumping around. so it is interference from the wire which leads me to thin that the wire does not have enough shielding.

    That is crazy. so as someone else said just spring for the good stuff.
     
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