Two different issues. If the warranty is over, now matter how PO'd you are, the manufacturer has no legal obligation to fix anything. As for cost effective, that is another issue. Most appliances are rally cheap to buy compared to what they were years ago. That can be both good and bad.
The real problem though, is the noise. Do you know where it is coming from? Motor? pump? Every part of the cycle? Fill or drain worse than other times? Need more information to diagnose, but you may want to check out