Eos 5d m4 won't switch on.

[tobylong]

I have an Eos 5d Mk IV that has been sitting unused for a few months and won't power on. I've tried several batteries, anyone else have the same issue? Can't find a CMOS battery in it. Thought I would try before sending for repair. It's a very little used camera(backup). Cheers.

[shadowsports]

Greetings,

Before sending the camera in for repair, check the memory slot door and battery slot door for proper closure.  The battery door has a small tab that must be engaged in order for the camera to turn on.  

[tobylong]

Thanks Rick, double checked both, it doesn't appear to be that.