macbook air won't charge, no led
Hi, just yesterday I noticed my macbook air (13" 2011) isn't charging when I plug in the magsafe and the led won't turn on. I went through all the steps in the magsafe troubleshooting page - including checking the pins and unplugging the charger for a minute or two and letting it reset in case there was line interference. I've also tried resetting the SMC (ctl-opt-shft-power). That didn't do anything. The computer is still under warranty but just wondering if anyone else has had this problem?
Thanks,
Rich
MacBook Air, Mac OS X (10.7.4)