Question about Canon SPEEDLITE 580EX TTL Flash
All Canon EOS cameras with a pop-up flash built-in (digital or film) has a small switch on the flash shoe on the top of the body which tells the pop-up flash not to pop-up when an external flash is mounted on the top. The shoe of the flashunit pushes this switch down to tell the body it's there.
This switch is probably now struck in the 'down' position hence the pop-up flash still believes a flashunit is mounted on the top.
If you hold the camera as if you taking a picture & look underneath the left side of the body's flash mount, you should see a little pin rising up from the body & resting on the sprung part of the metal shoe cover. If this pin can not be seen then there is your problem.
Sometimes it is just a bit of dirt holding it down - sometimes it has almost corroded itself in there.
If you can, try lifting out the metal cover on the shoe (lift the front part infront of the largest contact & pull it backwards) & then try to gently raise the pin. On most models it is plastic & can be easily damaged so be alittle careful with it.
If you can get it moving up & down again, all should be well.
If it's really stuck, then it has to go to a repairer but there should be one who could do just the pin fault without charging for a complete service. (like myself but I'm in the UK)
Hope this helps
Posted on May 09, 2008
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