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Err 40 error on my 7d... does not start up. Top screen

Err 40 error on...

Err 40 error on my 7d... does not start up

Technician's Assistant: Are there any flashing lights, symbols, or messages on your camera or display screen?

Top screen flashes 'err 40'

Technician's Assistant: Have you tried removing and replacing the battery and/or SD card?

Yes, no response

Technician's Assistant: Anything else you want the Camera Expert to know before I connect you?

I have battery grip on camera, I have also tried the batteries in the original side compartment.

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Answered in 2 hours by:
3/19/2018
Harry
Harry, Camera and Video Technician
Category: Camera and Video
Satisfied Customers: 2,824
Experience: IT at Justanswer
Verified

Hello:

Welcome to JustAnswer! My name is ***** ***** I am happy to be assisting you today. My sincerest apologies that it look so long for someone to reply. I've just logged in and saw your question waiting and I'm happy to assist you. Before we begin, can you please let me know if you still need help with your question? Just use the reply box to let me know.

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Customer reply replied 5 months ago
i still need help with problem

How old is the camera?

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Customer reply replied 5 months ago
its a canon 7d which was first released 2009, I had bought it 2 years ago second hand.

Error 40 : Battery related error:

Clean the contacts of both battery and camera with isopropyl alcohol. Try replacing the battery.

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Customer reply replied 5 months ago
have cleaned as suggested with still no result.

Have you tried replacing the battery?

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Customer reply replied 5 months ago
I have 2 batteries 1 is the original that came with the camera, the other is 2 years old.

Unfortunately, if that did not fix the issue then the camera would need to be repaired/replaced.

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Customer reply replied 5 months ago
any idea what the problem is associated with.

Yes, it is a battery/contact issue within the camera. If the replacement battery didn't work then the contacts are having an issue.

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Customer reply replied 5 months ago
in a 2 battery compartment eg a battery grip are you saying that both the contacts of camera & battery are attributing to the problem?... it only needs one battery contact to operate.

No, I am saying that the contacts in the camera are causing the issue if a replacement battery did not work.

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Customer reply replied 5 months ago
are you saying the battery contacts in the camera?

The contacts in the camera

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Customer reply replied 5 months ago
I am saying that if the contacts ??? are the issue then surely one of the contacts in battery grip will be workable.
BTW I have noticed that the err 40 has disappeared from the top screen but now have a battery sign sign flashing.. these batteries were both charged to the max last night.??

Yes, as I mentioned it is either the battery or the contacts. It is a contact issue.

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Customer reply replied 5 months ago
as noted in my last message regarding the absence of the error message being displayed ... what are your thoughts?

Yes, still the same issue.

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Customer reply replied 5 months ago
Thankyou. Just a thought regarding firmware. Do you think an update on firmware will solve the problem?

No

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Customer reply replied 5 months ago
Thankyou Harry,
I will not waste anymore of your time.
Regards

You're welcome!

My goal is to give you the best experience possible! I hope I have earned a 5 star rating! Please remember to rate my service by selecting the 5 stars at the top of the screen before you leave today. If you need more assistance, please use the reply box and let me know.

Harry
Harry, Camera and Video Technician
Category: Camera and Video
Satisfied Customers: 2,824
Experience: IT at Justanswer
Verified
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