600EX-RT Battery Problem (5DMarkIII)
I shoot with a 5DIII and purchased a 600EX-RT last month. When I first put batteries into it I received a low battery indicator. To make a very long and frustrating story short I found 30 posts on the Canon forum discussing this very problem. The suggested solution is to press the two clear buttons, turn the power switch to ON and then to LOCK. Indeed this worked, at least the first time. Now that I changed to a fresh set of batteries the problem has returned and nothing I have tried will fix it. Any, yes, I have tried many brands of new disposable and rechargeable batteries. Does anyone have experience resolving this issue. Thank you.