3rd al MacBook. Now screen hum/flicker?

Discussion in 'MacBook' started by California, Nov 30, 2008.

  1. California macrumors 68040


    Aug 21, 2004
    Third one. Picked it up yesterday, bought four gigs of ram, did updates and now when I was installing the trackpad firmware update, I am seeing a sort of low visual "hum" not unlike a florescent light bulb before it starts to radically flicker and die.

    Are LED screens like florescents? I mean do they have alternating current flowing through them?

    If so, this is very very bad news. Artists will tell you never to use florescents because the underlying on/off current that lights up florescent tubes puts imperceptible strain on your eyes.

    I turned the brightness up and it seemed to stop. But if LED technology is anything like florescent tube lighting, this is going back and I'm getting a refurb. It will kill your eyes if you are looking at the screen for any amount of time.

    The other two did not have this slight visual hum, as far as I recall.
  2. California thread starter macrumors 68040


    Aug 21, 2004
    Oh I googled, thanks. Did not get a straight answer. But that was cute.

    Anyone know if LED has the inherent alternating current flicker that florescents have?

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