[Joe]

Hi, sorry to here that.......has to be probably one of THE most frustrating things. Particurlarly if wasting film.
Just a few thoughts, you may/may not have tried;

Double check the flash fires when the flash hotshoe contacts are shorted (with piece of insulated wire), not just by using the flash 'test' button

Put the flash on another camera hotshoe and check it works on that one.

Put another flash on the T70 to see if that fires.

Do the flash contacts look dirty,damaged or discoloured in any way?

Anything loose, or marked on T70 hotshoe?



To help a little more, what model flashgun is it? Is it a Canon dedicated one?

Is the problem intermitant, or does it never ever fire?

I can't remember offhand whether the T70 has a PC flash socket. If so, does the flash fire from this? ie are you able to plug the flash into the PC socket rather than use the camera hotshoe...just to check flash operation.