Canon Speedlite 580EX II burning smell, now not working

SOURCE: Canon Speedlite 580EX

Buy the 550EX, it's cheaper

Master /or Slave = 550
Slave = other

Alexander

SOURCE: I have a Canon Speedlite

Perhaps the unit is set to master/slave mode. Look into that.

hint: Press and hold on the zoom button to get into the master/slave menu

SOURCE: Wrong owner's manual here for Canon Speedlite 580EX Flash

You can get the proper manual from the manufacturer's web site at http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&tabact=DownloadDetailTabAct&fcategoryid=316&modelid=14998

Testimonial: "Thank you very much for the help. Best regards, Ash"

SOURCE: How to restore factory settings

To reset the C.Fn settings on the flash just go into C.Fn mode and set each setting to 0.
If there is no C.Fn icon showing, the flash is at it's factory default setting.
Hope this helps :)