Did you change any settings on the camera or any of the flashes just before the problem occured?
Try cleaning the hotshoe contacts, there might be a problem there. If the pop up flash works fine and the external doesn't, it really seems like there is some problem in communication between the body and flash. Just a few days ago I mounted a Metz flash on my k-x after quite some time (I hadn't used the camera for more than a year). At first, the flash didn't fire at all. After cleaning the contacts, it worked fine.
|