iMac 820-3481 no power.

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  • guruji
    Senior Member
    • Oct 2012
    • 119
    • India
    #1

    iMac 820-3481 no power.

    hello
    I have an iMac works perfectly without rtc cell .the moment I put the cell back and the I see on S5 lite and then go to power on the S5 disappears for a sec but does not power on.If anyone can help me where I should look for problem.
    thanks
    Tags: None
    • AlbinoKrait
      New Member
      • Jan 2022
      • 7
      • Canada
      #2
      Re: iMac 820-3481 no power.

      Just curious, have tried using a different battery and doing an NVRAM/PRAM reset? Sometimes it needs it cleared/reset with hardware a change (the RTC cell counts with this) or you could have a battery that doesn't have enough voltage to pass the startup diagnostics performed with every boot/power on.

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