Dead iMac - what worked for me

Discussion in 'iMac' started by Roller, Aug 9, 2009.

  1. Roller macrumors 68020

    Jun 25, 2003
    Woke up this morning to a dead iMac (early 2006) that had been left sleeping overnight. I had once read that a depleted logic board battery would prevent the iMac from booting. But I was skeptical that this was the problem, since the computer was asleep and hence had some power running through it. I was more worried that the power supply had blown.

    Still, I decided to open it up and take a look. This video was a very helpful guide. The most frustrating part was peeling back the membrane that surrounds the display - I ripped it in a few places, despite being careful. The four screws holding the panel were also a pain, since there's not much room to work. (You'll need a T8 screwdriver, BTW.)

    Long story shorter, changing the logic board battery worked. Total cost was about $12 for the CR2032 batteries at Radio Shack, which only come in packs of three, and a few bucks for a new T8 screwdriver thin enough for the job.

    Hope this helps somebody save some cash for the next iMac. :)
  2. geoffreak macrumors 68020


    Feb 8, 2008
    The batteries in computers rarely die before the computer. Either you had the computer for a very long time, or a bad battery.

    I used to buy CR2032 batteries at Walgreens in packs of 1 for about $3-4 (I needed them for the Dreamcast memory packs with screens). The Radio Shack tends to overcharge for everything it sells (but has everything you need in one place).
  3. Roller thread starter macrumors 68020

    Jun 25, 2003
    The computer is 3 1/2 years old, so not sure why the battery died when it did. Agree about "The Shack," but it sure is convenient.
  4. fhall1 macrumors 68040


    Dec 18, 2007
    (Central) NY State of mind
    Could have died if it's like a PC battery and you left the iMac unplugged from the power socket for a long time. PCs (not sure about Macs) use power to trickle charge the on-board battery - or to keep the CMOS settings intact so the battery doesn't have to.
  5. zmttoxics macrumors 65816


    May 20, 2008
    They often die before a computer is EOL. I have replaced countless batteries in countless dells that are not but 3 years old. Really depends on the system, and the quality of the battery.

Share This Page