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Russell H.
Russell H., Technician
Category: Digital Cameras
Satisfied Customers: 11046
Experience:  Working with digital cameras & questions for nearly 8 years.
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I have a eos 5d mk3 camera at random it will shut down and

Customer Question

I have a eos 5d mk3 camera at random it will shut down and not allow me to use it. occasionally it will not focus and sometimes you cannot review images on the back screen It's very frustrating. I disconnect the lens and reconnect this sometimes works, switch the camera on and off or remove the battery and reinstate it.
Submitted: 2 years ago.
Category: Digital Cameras
Expert:  Russell H. replied 2 years ago.
Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.

It does sound as if the camera has a severe problem in its control electronics.

However, the problem being intermittent could signify that it is being 'zapped' with static discharges. Do you wear woolens occasionally, or wool clothing? if so, that encourages static discharge. Also almost any form of sweater does this.

Try removing the batteries, and leaving the camera on a (dry, non-humid, non-dusty) shelf for overnight. Then put the batteries back in and try the camera again.

Then try cleaning the terminals in the battery compartment, after removing the batteries, first by rubbing off with a fresh pencil eraser, then by wiping the terminals off with cotton swabs moistened in rubbing alcohol, then letting them dry off for 5+ minutes with the battery compartment door open, then try turning the camera On again.

How old is the camera? in months or years since you bought it.

How long has the battery or batteries in the camera been in-use? If over a year, then you might possibly have a battery/batteries that are getting weak. Rechargeable batteries do get weaker with time, and eventually fail to deliver enough power to start up a device like a digital camera; they then need replacing. The replacement battery needs to be charged up for 6+ hours before its first use, owing to its having been on a shelf for a considerable time.

Has the camera been dropped or otherwise subjected to mechanical shock(s) in its lifetime?
Has the camera been operated in or subjected to, temperatures below 32 degrees F (freezing point) or above about 100 degrees F ?
Has it ever been subjected to a humidity higher than 85 % or gotten wet ?

Has the camera been operated in a gritty or sandy environment, such as a beach, a seaside, a construction site, or the like?