bad logic board vs. bad fan

Discussion in 'MacBook Pro' started by jdreher, Apr 15, 2007.

  1. jdreher macrumors newbie

    Apr 15, 2007
    I am a MBP user experiencing what seems to be the same fan issues that I have read so much about. It seems like the problem of dying fans is pretty widespread and many logic boards and/or fans have been replaced. My question is there any way to tell whether it is your logic board that is the problem or if it is just a bad/noisy fan? I am pretty familiar with the insides of my machine and have opened it up a couple of times for various upgrades, etc...and yesterday I opened it up when a fan died and was able to "resurrect" it but now it is acting noisy again. Anyway...I'm hoping the problem is just a faulty fan and not the logic board but I really don't know how to tell if it's the logic board. Anyone have any idea?

  2. mad jew Moderator emeritus

    mad jew

    Apr 3, 2004
    Adelaide, Australia
    Have you run the Apple Hardware Test from the install disc (boot whilst holding D)? It's not brilliant, but it might be able to discern the area more specifically for you. Either way though, I'd take it back to Apple if it's under warranty. :)
  3. DaLurker macrumors 6502

    Mar 30, 2006
    Fans that have died are generally on their way out. It isn't the logic board, just the fan (if it stops spinning). You would need to get it replaced as there is no way to fix a fan that's about to die. Whether Apple replaced the whole logic board to replace the fan, i don't know.

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