Hoping someone has an easy solution. Yesterday, my Canon 6D Mk II began producing an error message saying that the camera/lens contacts needed cleaning. I wiped both with a soft knit cloth as advised on a few websites. Then I shot 2 pics before getting the same error message again. The lens is the Canon 24-105 (several years old). I then changed to a different lens and everything worked fine. So it seems the lens contacts were the problem. Anyone know of a simple fix? Or will I have to get the lens checked out somewhere?

Thanks.

This is usually caused by a cracked cable connecting the power diaphram unit in the lens to the main circuit board. These cable are designed to flex but will break eventually.

Hi. My name is Rick. I’m the owner and lead technician at Discount Camera Repair and a member in good standing here at the UHH. I’ve been doing repairs for other members here at greatly discounted rates and would be glad to help.

I'd be more than happy to repair the lens for you and keep the cost as low as possible. If you’re interested, please respond by private message.

Look very carefully all around the mount, there are typically a few very tiny screws that are often not easily seen. Tighten (be careful not to strip) and a tiny dab of threadlocker, or nail polish will keep them secure, if that is the issue. If you looked at openiing it up (and have no experience with that) proceed very slowly and cautiously, watch carefully not to stress any moving parts, and esp. any ribbon cables. Check any you see (you can unlock them and pull and clean the contacts) make sure the clips on the connectors are securely locked in place when done. Be very thorough and gentle if you do decide to "go in"....do watch a couple of lens repair or cleaning videos, you will see the type of issues that can arise.