Help with Canon 600 EX-RT
Sounds like a busted unit to me. I've been using 5 of them without any of the issues you've described since March.
I could only recommend the steps you have already taken, apart from checking the contacts are clean on the flash.
Other than that get it set off for repair!
- Fujifilm X-T223.6%
- Nikon D50025.4%
- Nikon AF-S 105mm F1.4E8.2%
- Olympus M.Zuiko 12-100mm F47.5%
- Panasonic Lumix DMC-G857.2%
- Sigma 85mm F1.4 Art6.7%
- Sigma 50-100mm F1.8 Art5.1%
- Sony a63006.4%
- Sony Cyber-shot RX10 III3.7%
- Sony Cyber-shot RX100 V6.3%
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