OK...got batteries. but not working. then I got rid of the corrosion on battery contacts. Still did not work. opened up the shell (three tiiinnny screws). Things a bit mobile when opened.. with the batteries in it hit me with a electric jolt. Decided to close up with batteries out. when out and batteries in.....it started to work, sometimes correctly and sometimes randomly. The testing button did not get back into the slot correctly...but I could still test. I reallly wanted to open again so I took the batteries out and the damned thing kept firing, sometimes ok and/or randomly. Eventually, the charge in the capacitor must have finally lost it's charge. I'm not in the mood to reopen this thing to get the testing button in it's hole correctly. Something wrong here. Try and find one of these flashes....almost impossible and some 200$ or more. Worse than Leica.