Hello I have a imac G5 17" and it will not boot up.

Hello, I have a imac G5 17" and it will not boot up...... There isn't any chime when you turn it on and the led light will come and fade out a little but will stay on and the screen will stay black. Does any one have any suggestions on what's wrong and how to fix it?
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The bottom of that article says to contact an authorized service technician.  You may also find that simply replacing the PRAM battery (the coin shaped battery) helps.   Note: if you have any capacitors that are labelled X on their top (as opposed to just K), you may have the problem of the leaking capacitors which required a power supply and/or logicboard replacement.  The leaking capacitor was an industry wide problem.

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