I tried everything to no avail. I spoke to Canon who suggested i bring it in for repairs, so i did. Its going to cost about $200 including shipping. I have no choice as i need it for a job ASAP. Thank you anyway for your help.
I am having the exact same issue with my 600EX-RT's. I have two which i use as slaves on my Canon 5D Mark IV with a brand new ST-E3-RT Transmitter as a master. They were both working perfectly fine, firing in every shot. Now one of the flashes (Slave...