Please help, I have no idea what's wrong. I have a zenith et and I know it quite well but for the first time I'm trying to use it with flash. I bought flash unomat 20b that is supposed to work with zenit et, but it doesn't. I mean, flash works perfectly on it's own but it doesnt synchronize with camera. I use hot shoe and 1/30-X, no flash in the moment of pressing the shutter, hot shoe&cable 1/30-X, no flash in the moment of pressing the shutter, only cable-quite the same. Have no idea what could be wrong, please help.