PowerBook 17": Loud, loud noise eminating from left side on startup

After overheating last night, my PowerBook won't start up when plugged into the wall (with the battery removed). It does start up when the battery is in, but when it does, a VERY loud sound similar to an old-style modem making a connection comes out of the left side of the machine.
Anyone run into a similar problem?

Hello,
It seems that given your description, you will have to take your machine to a local apple service center. Only the technicians will be able to make a firm diagnosis f this particualr issue.
If i was cornered, i would say it could be several things however...such as the DC-in board, a faulty cooling fan, or even a damage/corrupt BootRom!(this is bad bad news)
Hopefully its not that serious, but i do wish you good luck in this case!
Sorry i couldnt be of more help,
Cheers
Bry

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There are 2 things in that area with motors; the fan and the hard drive. With the noise present at a cold start I would think the hard drive might be going bad.
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My powerbook 17'' always has this noise come from left side of the powerbook. I am unable to determine the source of the noise coz I am not sure where is the exact location of the noise. (I read that the fan supposed to be in left side of keyboard and harddisk is in the left side of the palm rest; please correct me if I am wrong).
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Is the harddisk supposed to spin all the time (even no read/write activity)?
There is what has been called a sizzling sound that constantly emanates from this computer, and, depending on the combination of your sensitivity to it and the presence of ambient noise, is clearly audible in a silent room, but this is easy to differentiate from the fan, which is quite a bit louder. If you haven't done any processor intensive tasks, then it's possible that you have never heard this fan, which doesn't go on, I believe, until the CPU has reached a temperature of about 145F. On the other hand, the 'sizzling' sound has been a frequent topic of discussion in this forum. Over the course of the first two revisions of the PB 17, one thread on the subject grew to around 300 posts in length.
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BTW, What became of this issue?: http://discuss.info.apple.com/webx?13@@.68b7a64a

PowerBook 17": Loud, loud noise eminating from left side on startup

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