The fan light won't come on when I pull the chain. The fan works. Can the switch be fixed if so where do I get one. The fan is 10 yrs. Old any guarantee left.

No guarantee likely if 10 years old. You can get a new switch at most places that sell ceiling fans

It's probably not the switch. What make is the fan?

General ceiling fan troubleshooting and help FAQ- Ceiling Fans N More (http://www.ceiling-fans-n-more.com/ceiling-fan-general-troubleshooting-and-FAQ.php)