Can anyone help me figure this out please. I have a pair of Inon 330s connected with a sync cable to my Nauticam housing using the Nikonos 5-Pin bulkhead and the universal hotshoe on an A7RIV but it won't fire the strobes. I've tried the following:
Connected the hotshoe to an A7RIII and the strobes fired (Flash settings on both cameras are the same) - so strobes and connections clearly work fine.
The A7RIV is firing a native speedlite and a Canon speedlite, which suggests it's not a problem specifically with the camera and/or hotshoe.
BUT the combination just won't work. Has anybody else had this issue and found a solution