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600ex speedlite won’t sync

daveburdick
Apprentice
Hello all,

I’m running into an issue where my 600ex-Ryan v1 speedlite won’t wirelessly sync, via optical or radio, the link light just stays red. I’ve tried using my ST-E3-RT transmitter to link optically, which works for my other 600ex-Ryan speedlites, but this specific one won’t work. Any ideas, or should I just write this one off as broken?

Dave
1 ACCEPTED SOLUTION

Just make sure that the channel and ID settings for both the ST-E3-RT and 600EX match. Also check that the flash is in radio wireless mode with an amber colored screen.

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2 REPLIES 2

daveburdick
Apprentice
600ex-rt, not 600ex-Ryan (thanks autocorrect!).

Just make sure that the channel and ID settings for both the ST-E3-RT and 600EX match. Also check that the flash is in radio wireless mode with an amber colored screen.

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