Sizzle, Cracking sound near Network Cable or Mag Power Connector?

I've had my new Macbook for about two months now. This morning, for the second time, when booting, there is a loud (volume as loud as loading a CD into the drive) crackling, Sizzling type of sound coming which appears near the magnetic power input. Both times this has occurred, it has lasted for about 30 seconds, I did pull out the power cable, the network cable, all USB connectors and the sound didn't go away.
Sounds like a shortwave or A.M. radio on an untuned station, starts as a crackle, then more of a static sound, which generally increases in volume to a maxiumum (for about 30 seconds), then shuts off.
I've only noticed this twice on a cold boot after the MB was powered down overnight.
Anybody else have this type of experience?
Brent
Macbook   Mac OS X (10.4.9)  

Welcome to Apple Discussions!
It sounds like you may have accidently frayed the power cable. My FAQ* has good reference links for you to determine if this is the case:
http://www.macmaps.com/frayguide.html
Good luck getting it replaced.
* Links to my pages may give me compensation.

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