https://community.usa.canon.com/t5/Speedlite-Flashes/Speedlite-600EX-RT-not-powering-on/m-p/550498#M5740 <P>Hi...</P><P>&nbsp;&nbsp;&nbsp; My 600EX-RT was working till Nov'24 and hadn't used it for last few months. When I tried to power it on yesterday, it failed. Tried testing it with different battery and it still doesn't power on. It does not have any kind of damage.</P> Sun, 25 May 2025 17:33:05 GMT pmohanan 2025-05-25T17:33:05Z https://community.usa.canon.com/t5/Speedlite-Flashes/Speedlite-600EX-RT-not-powering-on/m-p/550498#M5740 <P>Hi...</P><P>&nbsp;&nbsp;&nbsp; My 600EX-RT was working till Nov'24 and hadn't used it for last few months. When I tried to power it on yesterday, it failed. Tried testing it with different battery and it still doesn't power on. It does not have any kind of damage.</P> Sun, 25 May 2025 17:33:05 GMT https://community.usa.canon.com/t5/Speedlite-Flashes/Speedlite-600EX-RT-not-powering-on/m-p/550498#M5740 pmohanan 2025-05-25T17:33:05Z