iMac problem (power surge - hardware failure)

Posted on 2004-10-21
Last Modified: 2013-12-27
Hi sorry if this is in the wrong place, but it seems to be the only Mac hardware related forum.  I've had pretty good luck with EE before so I thought I give it another shot.

Anyway, here's the situation.  I have an iMac that I was working on that I believe had a power surge.  The result is a dead iMac, won't boot to CD-Rom and fried the harddrive.

The System:

500Mhz Slot Loading
Model M5521

Post surge symptoms and troubleshooting:

Computer turns on to Blank Aqua Screen
Harddrive clicking (definately toast)
Won't boot to Mac OSX CD

Things I've tried

Replaced harddrive (toasted it as well - started clicking almost immediately)
Replaced power supply (No change)
Replaced logic board (No change)

I still haven't replaced the harddrive again yet, as I'm just trying to get the computer to boot to Mac OSX CD (I didn't want to fry another drive)  Can an iMac boot to CD-Rom without a working harddrive?

I don't know a whole lot about Mac hardware, so I'm kind of at a loss as to what I can try next.  This is a clients computer so, and it was surged while in my possession, so I really need to get it up and running again.

What else should I try, what other hardware would I be concerned about after a power surge?  

Thanks for any assistance you can provide, and let me know if you need further details on anything.


Question by:jb1013
    LVL 2

    Accepted Solution

    A power surge can fry almost any component. If the modem was connected to a phone line, that may be fried also.
    If the CD/DVD drive is still good, it should be able to boot while holding down the "C" key.
    Failing that, you can also try holding down the combination "Apple" + "Option" + "Shift" + "Delete" during boot.
    Presuming you have a bootable CD (such as an original Mac OS CD) it should not require a working Hard Drive.
    LVL 1

    Assisted Solution

    when you start the mac what sound does it make?

    1, 2, 3, 4 or 5 tones?

    Write Comment

    Please enter a first name

    Please enter a last name

    We will never share this with anyone. Privacy Policy Terms of Use

    Featured Post

    Learn The Basics of Ethical Hacking & Pen Testing

    Computer and network security is one of the fastest growing and most essential industries in technology, meaning companies will pay big bucks for ethical hackers. This is the perfect course to leap into this lucrative career, learning how to use ethical hacking to reveal ...

    The purpose of this Apple-hardware based article is to provide helpful information about an important component required of all Apple portable notebooks (Apple does not call them "Laptops" because they are too hot to sit on your lap), but is not o…
    Smartwatches: just a fashion accessory or a useful device for all? The Apple Watch ( was launched in April of 2015 and has become a new way for iPhone users to stay connected. Ranging from $349 to $17,000, the Apple Watch…
    This Experts Exchange video Micro Tutorial shows how to tell Microsoft Office that a word is NOT spelled correctly. Microsoft Office has a built-in, main dictionary that is shared by Office apps, including Excel, Outlook, PowerPoint, and Word. When …
    This video is in connection to the article "The case of a missing mobile phone (". It will help one to understand clearly the steps to track a lost android phone.

    877 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    19 Experts available now in Live!

    Get 1:1 Help Now