Today i tried to connect my external flash gun (sunpak PF30X) and i could not get it to fire. Im assuming that this means its dead although strange thing is that i can test fire the flash but the camera will not fire it at all. ive tried new batteries, taking battery oput of my 40d etc but still no luck.
I know its more than likely dead but just wanna check to make sure im not missing any custom function etc (even though ive used it many times before)
and advice welcome



