Ok...well I bought the Turbo SC battery and chord that connects it to the 580exII...used it in a wedding yesterday. Didn't use for ceremony but intended to use for for reception...but....(I swear if I didn't have bad luck I wouldn't have any!)...when I plugged it in to the port (with little force)on the 580 head, which can only go one way, I heard a snap. End up finding out that the plastic housing around the three prongs inside the head became dislodged and I could actually push further inside the 580's housing...in short the chord won't connect to the head anymore!
Aside from the 580exII damage, it still fired, but I still have so many mis-fires, even with fresh PowerEx 2700 ma NiMh...why, why?? Do these Speedlites eat batteries this fast? I tried both of my 430's and they did the same thing!...I rarely had back to back shots during the reception where the flash fired...and I wasn't in rapid fire mode either. Is it possible there's problems with all three, I've have all three for a few years with alot of shots on each.
I'm not sure it's worth even paying to fix the 580, except for maybe for a backup to the Quantum Trio I'm thinking of picking up this week.
Does anyone have any suggestions or thoughts?