85W MagSafe adapter has stopped working Yesterday I noticed that my 85W MagSafe adapter had stopped working. 

I usually leave it plugged in constantly to my MacBook Pro (but not constantly on at the switch). 

The LED on the plug that connects to the MacBook Pro no longer lights up (I don't get any colour light whatsoever). 

Apple are sending a replacement adapter out in the post but that will take 3 days so I was wondering if there are any secrets that could get it back working in the meantime?

So far I've tried leaving it unplugged and then using another plug as per a post I read online about some sort of 'automatic protection' but that didn't work either.
Unless the pins of the MagSafe that carry the power were physically stuck, the fault isn't something you could or should fix. Hopefully Apple's diagnosis is correct and you don't need a repair of the Mac instead of a repair of the adapter. 

You'll discover that in three days time unless you can test with another MagSafe adapter in the mean time.