CANON 7D ERROR 40 URGENT HELP NEEDED

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Alexday1978

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Alex
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At Bempton today, 5 hours and 500 shots in, my 7D stops functioning, no focus, no shutter and LCD showing error 40. Did this with both batteries and all lenses.

Turn it off and on = blank LCD and no function
Turn off Battery pull then turn on = No focus or shutter then after a short while back to error 40

Drove 2 hours home and did a battery pull and the issue and error is not happening anymore. In one way good, but with a week in the Farnes coming up in under 2 weeks, I do not want to be feet away from a Puffin when it reoccurs.

Anyone experienced this, know what the issue is? Could I have overheated the battery/other parts with 5 hours solid shooting? Help, LCE where I got it (still under guarentee) said they send it away and can take up to 3 weeks. ......HELP
 
From what I have seen cleaning the inside battery contacts with a ear bud or replacing the button cell battery solves it for some.... but seems to be luck of the draw as an equal number seem to stop working all together after awhile.
 
According to the list of error codes I have handy....

Err 40: Power source malfunction
An internal error in getting power from the battery to some part of the camera has been detected. Most likely, it’s not a simple weak battery, although of course a battery error is a possibility.
Click to expand...
 
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