Lost ETTL on 580

I was shooting with my 580 last night setup on pocket wizards tt1 and tt5. It worked fine for a couple hours and then all of a sudden it quit. The flashes no longer showed up in the images but the flash was still firing. First thing I did what changed the flash batteries but still nothing. So I changed all my pw batteries and still nothing. So I place the flash on top of the camera and still nothing. Then I noticed I lost my pre-flash in ETTL. The flash fires at full power in manual no matter what the setting but does sinc with the camera. In ETTL it only fires once and it is as well at full power, but doesn't sinc with the camera. So no matter what the settings are the flash fires at full power every time. Anyone ever had this happen? The flash is just over a year old and everything is working, but not like it should. Any info will be appreciated.

Thanks

Jeremy

The only time i've had a flash fire full power when it wasn't meant to was when the flash wasn't seated properly on the hotshoe. It could be a faulty flash foot or a bad connection somewhere.

A similar thing happened to me when a piece of spam (long story) got stuck between the flash and hotshoe and obscured one of the contacts. Check your contacts!

I have looked and cleaned and checked for loose screws and I cant seem to find anything. I have tried it on both of my cameras and thought I would get some thoughts here before I send it off to get fixed.

Jim G wrote in post #10234723
A similar thing happened to me when a piece of spam (long story) got stuck between the flash and hotshoe and obscured one of the contacts. Check your contacts!

sounds like an interesting story!

ed. wrote in post #10234893
sounds like an interesting story!

+1 me wants to know in a dedicated thread.

Spam in/on a camera is

I've had this happened to me. Something to do with battery assembly, etc.

My post here: https://photography-on-the.net …p?p=10089328&po​stcount=12

Full thread here: https://photography-on-the.net/forum/showthre​ad.php?t=864214

I had two 580EXIIs exhibit the same symptoms.
Sent them to Canon they were both repaired with battery assembly replacement and in one case one or more circuit boards.

They came back together and one started doing the same thing after 5 test shots.
The other worked fine in testing and also throughout a wedding Saturday.

Thanks eggrollboy and dmward. I knew somebody on here would be able to help. Going to get the address to Canons repair center now.

i just read the whole thread, best of luck with your situation!

oh and I would also like to hear that story too! ;D

Got the flash back yesterday from Canon repair. They said the main PCB had gone bad and was replaced. Cost me $120 and 11 days being gone. That also bought me a 6 month warranty on the same problem, so thats not bad in my opinion. Just thought I would update.