My Advantium is almost 8 yrs. old & has always been very reliable. Everything on the micro seems to be operating except it is not really cooking. The halogen lights,fan,turn table and all of the settings appear to be functional. It seems to be going through the whole process and tells you the food is ready. It was making a rattling noise for a short while before this happened and it seems like the fan was trying to cool it down much more frequently than I can remember it normally used to. Really lost without my favorite appliance. Would really appreciate your assistance.