I took delivery of a Pi-3 last week (invoice 59952) which worked when first out of the box but networking (both wireless and eth0) failed after about an hour of use. Have tried going back to a fresh NOOBs install and still no luck. Must be a hardware fault. Please can I return for an exchange? Do I need an RMA number to do this?
I also bought a Pibow coupe 3 case which is unusable as the cut-out for the micro-USB cable is not large enough to accommodate the plastic surround of a standard micro-USB cable, meaning that it is impossible to power the Pi-3 when it is mounted in this case. A surprising design fault.
I am going to go ahead and order another Pi-3 as I need to get one more quickly than the return process will allow. However, I would still welcome your prompt attention for this return request.