Only One Strobe Fires in Lights, Strobes, and Lighting Technique Posted January 15, 2020 On 1/2/2020 at 3:55 AM, Redwing said: For those that have used Sea & Sea YSD2 and upgraded, what strobes did you acquire? Hi hopе the rest of your stay was productive regarding uwphotos! As for the problem I had the same also during this New Year holidays. One YS-d2 (not J version) just stoped firing or I would say started firing intermittently (for ex every other third or forth time and with full power no matter what power setting i select (and to be more confused if I select the lowest power setting it did not fire at all!!!)). So for now I am confused if I should buy a new J version and save some money or switch completely to Inon z330 (my wife using them and they work like a charm, they a more powerful (with my cause an overexposure in the shallows + large f-stop conditions ). So what was your decision or a strobe problem resolution?