I was using my sunpak auto 4205g thyristor flash (pistol grip, very similar to a 544) just fine for a few weeks via the PC sync cord, I assumed that it was okay to use with my 20d (not over 6v) after seeing a picture of another user on here using one with their 30d http://i45.photobucket.com ...ardie_j/Temp/100_1116.jpg
Teenage stupidity I guess.
I was shooting some macro with it a few weeks ago, and then it just stopped working all of a sudden, I just tested it with my dads old Olympus film camera and it went fine.
Could I have blown the flash trigger inside the camera?
I don't really know what the name for it is.
If I have broken it, is it fixable?