As Alissa gets taller, she is able to reach more and more stuff she isn’t supposed to reach. A couple weeks ago, she reached up and grabbed my camera strap and pulled it off the shelf. Camera is fine, lens is fine, but the flash was a casualty. The flimsy plastic hotshoe connection snapped in a few places. So, I ended up buying a new Canon 580EXII which is very nice but soon thereafter, realized that maybe the broken one was repairable. A few minutes in front of google and then ebay revealed a $12 replacement part. Yay!
Unfortunately, I wasn’t able to find instructions on how to actually execute the replacement so I thought I’d put up a few pictures and explain the process briefly.
Here’s my broken flash. Notice the four holes in the corners. This is what you should see after removing the screws that live in those holes. The long ones go on the bottom and the shorter ones go on top.
After you remove the screws, you should be able to lift the back end up and then pull out to clear the tab on the front side. Then you should see this:
On the right side, there are two screws that secure the external power plug. Remove those two screws. On the top, there are two smaller screws that secure the switch that determines the “off/master/slave” setting. Remove these two screws as well.
Now you should be able to access the four screws that hold the hotshoe assembly in place.
You can really only see the bottom right one in these pictures, but they’re arranged in a square pattern. They’re kinda tight with the wires that lead to the hotshoe connectors so be careful you don’t accidentally break the solder connections. Also, it’s worth noting that these four screws have a larger head on them so you’ll want to use a larger screw driver vs. the little jeweler screw driver you’ll need for all the other screws.
Anyway, after you unscrew the four screws (don’t back them out of the housing… just let them hang out there so it will be easier to reassemble later on) you’ll be able to pull the hot shoe assembly out. Be careful as there is a spring and locking pin that will be loose once you remove the assembly. The rest is easy. Just unscrew the broken piece out of the assembly and replace it with the new one being careful to replace the spring and locking pin in the correct orientation. (Sorry, I forgot to take pictures of this part.) Then just put everything back together and voila! The only thing to be careful of is to make sure you gradually screw in the last four screws on the outside of the housing. If you tighten one side too much, you won’t be able to get the other screws started at all.
If I was to do it again, I might apply a tiny about of grease to the locking pin and the threaded part since mine doesn’t seem to work as smoothly as it used to. Hope that helps!