I got an old Mac Classic II for christmas but there is a problem with it. When i turn it works just fine but after a couple of minutes it starts sounding like a bomb falling in a cartoon.
A high pitched squealing sound that gradualy changes pitch. I have´nt dared to have it on for long in fear of it blowingup or something.

I dont think it´s the harddrive as it sounds normal when working. I think it might be electricle or something to do with the screen. What do you think? and how do i fix it??

Tanx
//LANz