Not getting help with loud fan issue

Question

I have owned this iMac G5 for 2 1/2 years. A little while ago it started shutting down by itself and when I took it in to the apple Store at Chestnut Hill they replaced the logic board---and took three weeks to do it. When I got it back, it no longer shut down, but it now sounded like I was running a hair dryer at full blast. I've taken it back three times---most recently to the new Natick store, but they always tell me they can't find anything wrong and that it meets specs. (They did replace a wire connected to the hard drive once.)
I have Applecare, so it is not costing me money, but it has cost me LOTS of time without a computer---a serious problem for an author with a book deadline. And, worst of all, it's no better. I sit at the computer for long hours and it's affecting my hearing (ringing long after I turn it off) and my mental state. It is seriously loud---My mother-in-law thought she'd broken it when she turned it on.
One of the problems is that the noise levels in the Apple Store are so loud that it's hard to make a case. I'm really discouraged. we're being scrupulously polite, but it's getting harder and harder. I mean, what good is Applecare if they just make things worse in another way and then refuse to acknowledge the problem?
I need some constructive advice

Answer 1

Welcome to Discussions: If you have had several repairs and your computer is still not functioning properly, I would call Apple Care and gently ask for a new machine. Their policy is to replace a faulty machine after three tries. Hold the phone up to the computer and let them hear the noise. You are also entitled to in-home repairs, at the very least, have them come to your house and fix it. (is the new Natick mall fabulous?)
Let us know how things work out,