iFixit - Answers With Device "Canon EOS 7D"

Canon EOS 7D: Camera gets Err 30 message. How do I fix it?

Mon, 17 Mar 2025 10:58:50 -0700

I get an Err 30 while taking photos. I can shoot 100 or more photos, then Err 30 starts popping up every few tries. I take out the battery, replace it and restart. Usually camera will work for 10-100 more photos.

⟐ Commented March 17, 2025 at 10:58 MST

Canon EOS 7D: won't turn on even though battery charged

Thu, 03 Jul 2025 14:08:01 -0700

Hi,

Our Canon EOS 7D is about 6 months old. Can't get it to switch on - have fully charged the battery but it just flashes empty. Bought a second battery a couple of days ago and same thing. The CF door closed and the battery door closed, tried taking out the clock battery and resting for a few minutes, still nothing. tried with lens on and off, still nothing.

Any ideas?

Thanks!

⟐ Commented July 03, 2025 at 14:08 MST

Canon EOS 7D: Canon 7d error 40

Sun, 23 Nov 2025 18:56:25 -0700

i have an error canon 7d err40

⟐ Commented November 23, 2025 at 18:56 MST

Canon EOS 7D: My flash won't pop up on my EOS 7d

Thu, 15 Sep 2022 08:10:41 -0700

My flash won't pop up on my EOS 7d, any suggestions on how to fix this?

⟐ Answered September 15, 2022 at 8:10 MST

Canon EOS 7D: Damaged mode dial on EOS 7D

Sat, 01 Jul 2023 15:07:48 -0700

Hi I've got a mode dial that's damaged, i.e. the button is damaged but works. I need to replace it along with the top plate. Can I do this without dismantling the camera?

Thanks

⟐ Commented July 01, 2023 at 15:07 MST

Canon EOS 7D: My 7D just suddenly stopped working . help!

Tue, 30 Nov 2021 11:58:16 -0700

I was out shooting and my 7D just turned off by itself and after that

I couldnt make it work. All i am seeing on the mini lcd screen

is an empty battery icon that keeps on blinking even if its a fully charged battery

and even if the camera is switched off, that icon still blinks.

Tried to do something about it like turning it on and off, changing the

battery and trying another fully charged one, i even try to use another CF card.

⟐ Answered November 30, 2021 at 11:58 MST

Canon EOS 7D: How to replace internal Battery

Mon, 22 Apr 2019 09:17:30 -0700

Is there a chance to replace the battery inside the camera?

After being exposed to water, it looks like there is a problem with it. every now and then the camera asks me to setup date and time.

Thanks for any help!

⟐ Commented April 22, 2019 at 9:17 MST

Canon EOS 7D: Got Error 40 on my camera Canon Eos 7D what the problem

Mon, 18 Dec 2017 21:51:48 -0700

The Canon Eos 7D can turn on and operate but when I turn any button is had the sign Error 40 and than I switch off and take out the battery and reboots but another thing is that when I switch to movie its work and also can take picture. What the real problem. Hope to hear from you soon.

Thanks

⟐ Answer accepted December 18, 2017 at 21:51 MST

Canon EOS 7D: My cannon EOS 7D is not turning

Sun, 05 Nov 2017 22:31:34 -0700

My cannon EOS 7D is not turning on despite using a fully charged battery. Instead an empty signal of battery flashes at the top LCD (where f/nos, s/speed and ISO are displayed). The camera is 1.5 years old. I purchased 3 batteries as someone suggested me it as a battery problem. But none of them could turn on my camera. The empty signal flashes even the power switch is not ON i.e. in OFF position also. Please help.

⟐ Commented November 05, 2017 at 22:31 MST

Canon EOS 7D: The toggle switch is failing intermittantly

Mon, 03 Apr 2017 05:20:42 -0700

The toggle switch is not working regularly. You have to fiddle with it, as it doesn't want to move your picture up or down etc.

⟐ Answer accepted April 03, 2017 at 5:20 MST

Canon EOS 7D: How to change broken shutter on 7D?

Thu, 27 Aug 2015 06:47:04 -0700

My 7D stopped and I sent in to the Norwegian service provider, but pricetag of 500 GBP/600USD made me halt on repairing it. They said it also has a broken flash-board so several issues here!

I see the shutter is reaily available on internet, but has anyone out there done this job on a 7D?

Stein, Tromsø, Norway

⟐ Answer accepted August 27, 2015 at 6:47 MST

Canon EOS 7D: Can't take outdoor shots

Thu, 20 Apr 2017 11:03:43 -0700

Hi, I have borrowed my mates Canon EOS 7D fitted with a Canon EFS 17 - 85mm lens. I have it switched to auto focus but everyan time I try to take a shot outside the error code 01 comes up telling me there is a communication fault between the lens and camera! The weird thing is that I can take shots OK indoors but as soon as I try to take an external photo I get the error code come up! Any help would be appreciated as I have borrowed the camera for a holiday in the Scottish Highlands and not being able to take outdoor shots is not helpful to say the least!

⟐ Answered April 20, 2017 at 11:03 MST

Canon EOS 7D: card reader needs to be replaced

Sun, 17 Aug 2025 12:41:03 -0700

The card reader will not accept the card, a pin is bent or some sutch

⟐ Answered August 17, 2025 at 12:41 MST

Canon EOS 7D: How do I replace canon 7d LCD screen

Wed, 30 Jul 2025 11:02:11 -0700

Replace canon 7d LCD screen

⟐ Answer accepted July 30, 2025 at 11:02 MST

Canon EOS 7D: pictures are either black or blurry on fast action shots

Wed, 30 Jul 2025 11:01:27 -0700

When we take fast auction shots the pictures are either blurry or are black. The pictures are ok on automatic. Have tried it both on manual focus and on auto and the results are the same. Have tried switching lenses and it still does the same thing........we need help!!

⟐ Answer accepted July 30, 2025 at 11:01 MST

Canon EOS 7D: Need to repair the back LED screen to my Canon 7D

Wed, 30 Jul 2025 11:01:03 -0700

The LED screen on the back of my Canon 7D is cracked and needs to be replaced but I cannot find anywhere that this is a fix similar to fixing a phone screen. It seems the only repair is to remove the back of the camera and replace the entire LED itself. Do you know if it is possible to remove the back LED and replace it like some of the other Canon cameras?

⟐ Answer accepted July 30, 2025 at 11:01 MST

Canon EOS 7D: 7D will not turn on

Wed, 30 Jul 2025 11:01:00 -0700

How do you update firmware?

I have a 7D and the battery light flashes, camera will not power on. I saw other answers to this and tried taking out the CF card, new batteries, etc. Nothing worked. Saw something about updating firmware. How do you do that?

⟐ Answer accepted July 30, 2025 at 11:01 MST

Canon EOS 7D: battery compartment door has broken hinge.

Mon, 28 Aug 2017 09:23:23 -0700

the small hinged door that closes over the battery compartment is broken. Can i get a new one?

It looks simple to replace

thank you for your advice.

Jim D

⟐ Answer accepted August 28, 2017 at 9:23 MST

Canon EOS 7D: ERR MESSAGE 40 Power Source Malfunction

Tue, 07 Feb 2017 10:15:59 -0700

I was shooting a birthday party the other night and the camera just stopped working. I first noticed the battery gage level was going up then all the way down. I looked up ERR 40 and it said on a site it's a power source malfunction. Is there any way I can fix it or does it need to be returned?

Thanks.

⟐ Answer accepted February 07, 2017 at 10:15 MST

Canon EOS 7D: My Canon 7D Mark II keeps turning off and on with faulty microswitches

Sun, 21 Sep 2025 13:03:32 -0700

So i Bought a 7D Mark II at spares and repairs condition because it wasnt turning on, so i got it in my hands then i tried cleaning the Microswitches which detect whether the Battery/ SD port cover is open which stop it from turning on, and it turned on for a bit later on it turned off again, then it didnt turn off for a long time and worked normally but later on it started turning off and on all the time without stopping, the switches dont seem broken or damaged althought ive tried cleaning with isopropyl alcohol but nothing, what can i do?? ''