Well.....my PC333 ROS is making a wild noise every time I turn the "thang" on.!!!

The noise is coming from the bottom motor area and it "sounds" like the bearings are rattling on startup.....once it gets going the noise goes away. Any "eye-dears" on what I need to do if anything at all? I really don't want to have to buy a new one, but I don't want to pay a PC dealer the same or more than the price of a new one for repairs if needed.....

Any help or advice at all would be greatly appreciated.

Thanks,
Dennis