Emac won't turn on

I had it on sleep mode while I was at work. I guess there was an electrical storm while i was gone and when i came home it would not turn on. It was on a power strip and everything and i'm pretty annoyed that this all happened. Any suggestions? I'm looking into buying a new poer supply for it.
Emac g4    

I agree with all the tips that have been posted. The power surge may have not damaged the power supply at all, it could have damaged the mother board, either case would cause the computer not to start. When you press the power button, nothing happens? no light, no sound of any type? in that case then it is most likely power supply, but still could be mother board fried, at the area that power supply connects to mother board, causing no power to be given to software switch, or even to the fan/processor. I suggest that you test the power supply before buying a new one, in case it is not the problem. Get a power supply tester and test the power supply, But first I suggest you do the tips already posted, if the power supply is good, take it to a repair tech, to get the rest repaired, or send to apple. If you have not installed power supplies in e-macs before, to eliminate risk of damage to yourself and computer components, please take it to a repair tech.

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    OS   - Windows 7 
    Chipset   - Intel® HM65
    Memory   - DDR3 1066/1333 MHz
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    Graphics   - Nvidia GeForce GT 540M  + intel video card integrated
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    HDD (GB)   500GB / 640GB / 750GB
    Optical Drive   Blu-ray / DVD Super Multi
    Audio   7.1
    Webcam   HD type (30fps@720p)
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    Wireless LAN   802.11 b/g/n (Intel or Atheros)
    Bluetooth   Bluetooth v2.1 + EDR
    D-Sub (VGA)   
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    HDMI   
    1 (v1.4)
    USB 2.0 port   
    1
    USB 3.0 port   
    2
    Mic-in/Headphone-out   
    1/1
    Express Card   
    N/A
    Keyboard   
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    AC Adapter   
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    Battery   
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    Dimension   
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    *** note:
    the same issue happened to my xbox 360 and it completed wont turn on and the issue by then was the cable cord , and then it worked out well after i replaced it and afterward my xbox 360 died... despite the new cable cord
    and another note is that here in egypt and especially before the military coup that happened, usually the electricity here turns off suddenly and it really made me worried that it caused both my pc and xbox to fuse .. because they both faced the same issue..
    and i never had this kind of issue in my 10 years old desktop in kuwait which is really making me believe its electricity issue
    or maybe motherboard died..
    and thank you in advance!

    Quote
    hello? firstly why i cannot edit or delete posts?
    Quote from: Forum Rules
    Users are permitted to modify their own posts for 180 minutes after posting
    Quote
    now after the testing, i noticed my laptop won't turn on even with  the battery only and doing the 30second shutdown rest
    you mean its doing at his own 30 seconds On, then shutdown for 30 seconds and repeatable in that way?
    that hapends if you use battery only?
    or its doing the same if you leave ac charger only?

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