iMac 2006 HELP!

Discussion in 'iMac' started by JimmyNeutron8, Jan 15, 2016.

  1. JimmyNeutron8 macrumors newbie

    Joined:
    Jan 15, 2016
    #1
    Okay, so here's the situation. I have a 2006 iMac 20" 2.16 GHZ (Model: A1207). The other day the room the computer was in was being reorganized. Before anyone moved anything, I properly shut down the computer because I knew they wanted to move the UPS from one place to another which required that the computer be unplugged and the power cord be routed around the desk in a different way. Anyway, after I shut it down, I later came back after it had been moved. I pressed the power button to turn it on, and there was no response. I pressed it again, and nothing happened. I went through the usual things, resetting the SMC, trying different outlets, etc.

    Basically I know this: when it is plugged in, there is a very faint high pitched hum coming from the machine (I assume this is normal, but I'm not sure). Every three seconds there is a very faint clicking sound. After following the instructions to get to the three diagnostic LEDs, I notice that the lowermost LED is on when the computer is plugged in. This is normal, as far as I know, and means that there is power coming in. Nothing happens when I press the power button. However, every three seconds (at the same time as the clicking sound) the middle LED flashes on for a fraction of a second, while the lower light simultaneously turns of and then back on again. Every three seconds.

    Also, I plugged in a USB charging cable for a remote control toy to see if the USB ports are getting power. At the some time as the click and the middle LED flashing, the light on the USB cable that indicates that it is receiving power flashes on. I don't know how much of this information was relevant, but that's all I know so far.

    Any advice would be greatly appreciated.
     
  2. MadDane macrumors 6502a

    Joined:
    Apr 5, 2015
    #2
    It sounds like it might be the Power Supply that has kicked the bucket.

    I have found this link: https://www.ifixit.com/Answers/View/138335/My+iMac+will+not+turn+on

    In the description, which is the troubleshooting guide from Apple, there is the following description:
    From this it sounds like you need to replace the Power Supply in order to get it back up and running.
     
  3. JimmyNeutron8 thread starter macrumors newbie

    Joined:
    Jan 15, 2016
    #3
    Thanks for the reply! I suspected that the PSU was to blame (that seems to be a relatively common problem amongst Mac users).
     
  4. MadDane macrumors 6502a

    Joined:
    Apr 5, 2015
    #4
    Yes, unfortunately the PSU and dGPU tends to have issues over time with a lot of Macs.
     
  5. JimmyNeutron8 thread starter macrumors newbie

    Joined:
    Jan 15, 2016
    #5
    Just to update. I replaced the power supply and it works just find now! Thanks for your help, MadDane.
     
  6. MadDane macrumors 6502a

    Joined:
    Apr 5, 2015
    #6
    You're welcome. I am glad that you where able to fix it :)
     

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