speedlite 580ex II flashes at full power

[vencislav95]

HI, everyone 🙂
I have a canon speedlite 580ex II. But suddenly when I had made photos it started to flashes at full power.  Help me. What could be the problem?

[stivsan]

hi. i have the same problem. howe thit u change it? do you have pictures?

[Scott_TCR]

It's not an easy repair.  High voltage isn't fun.  Organizing the wires isn't fun.

http://z1b.livejournal.com/44638.html

[midel]

maybe you can help me.
I am an electronics technician,
I have already repaired 2 times my flash 580ex ii,
once the xenon tube and another time the IGBT. everything was fine.
 
Then following some hummingbird shooting at 1/8000 sec
my flash returned to full power only, manual, automatic, no more strobe, but the hss always founds a full power.
I still changed the IGBT, although it was not logical since the hss worked well, and check the optical cable,.

I always remain at full power.
  Thank you for your help if you are the technician and repairer of these models

Midel

[kvbarkley]

Canon technicians do not reply here.

[Crissmc]

Dear Sir,
I have an 580ex ii canon flash, (with the same problem as yours) i change the IGBT, but does not work. What other elements you change, please?
Kind regards,
Cristian S.