little battery cover switch.

Question

Canon EOS Rebel T4i / 650D

Part of the Rebel Series, the Canon Rebel T4i is a Digital SLR with an 18 megapixel sensor with an LCD monitor. Also known as the EOS 650D and the EOS Kiss X6i.

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Michael Amann @bblockbboy

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crwdns2931729:0crwdne2931729:0: Ndz 7, 2017

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little battery cover switch.

Hello,

my 650D could no longer turn on.

I found on the Internet a note that it could be the battery cover switch (little secure switch when you open the battery-cover). As I pressed the little switch with the screwdriver the eos turned on. :D

In the Internet I was supposed to bend the small switch with the screw in the middle. At the attempt the switch broked : /

Now my questions:

Can this switch or the board be replaced?

If so, what is the description of this board-part?

Can you simply bridge it? (I can solder)

I would like to unscrew the camera when I know more about it.

Thank you.

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score 1 · Answer 1 · 2025-09-01T17:33:04-07:00

Can this switch or the board be replaced?

If you can manage to find a replacement switch, it could potentially be replaced. The better option generally will be to just replace the whole board. The switch is located on a PCB board separate from the main PCB board and you can find the board for roughly $25-$40 on eBay.

If so, what is the description of this board-part?

There isn't a specific part number for the board as Canon considers the board to just be a part of the mirror box assembly. However you still can find the individual board being sold on places like eBay. Based on what I've found, it seems like that specific board is generally referred to as the "Power Board". Below is a picture of what that board looks like.

Keep in mind while searching for parts that the camera is also referred to as both Canon Rebel T4i and Canon 650D.

Can you simply bridge it?

Bridging it should allow the switch to simply be bypassed. However I'd recommend against this option simply because the switch is there as a safety feature and bypassing it could potentially lead to other issues.