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CANON 600EX-RT SPEEDLITE drops link

mariacorcuera
Contributor

I bought my Canon 600EX speedlight 3 months ago, I’ve been using it with my Canon EOS mark iv and the Canon speedlight transmitter ST-E3-RT, until now everything went well, suddenly it just dropped link; I thought it was the batteries so I changed them, worked for 3 shots and again dropped; it’s turned on, and everything seems to be working, suddenly it unlinks and the flash won’t go off; I reseted all the settings, twice! it works once or twice and again nothing, changed the Chanel, just in case, same thing happens, works 3 shots and I have to turn it off and on again for it to link again and for the next 3 shots, then again it unlinks.

2 REPLIES 2

Nick2020
Product Expert
Product Expert

Hi mariacorcuera,

Thanks for checking in with us.

It might help to try doing tests at different locations, just to confirm that the issue is location specific. It might also help to power everything down, clean the hot shoe area on camera and ST-E3-RT, and then try again.

If problems persist, try using one of your flashes on camera as the transmitter. Then try that with another flash. That will help us determine if the issue is specific to the transmitter or to select flashes.

Different locations were exactly the same, the link dropped suddenly... I also cleaned them both and the same.

As for the flash, I don't have another flash to try it with

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