I am aware of the mechanism regarding flash pop up. The hinging mechnaism on my camera is perfect. There is no debris or anything obstructing it. Your suggestion to pry open the flash with fingers is something I tried but I can barely get a fingenail...
Here's the work-around I came up with. Before pressing the flash release button on the 7D, press a finger firmly down on the back of the flash cover. It's the corner edge adjacent to a small white symbol that is a circle with a line through it. For m...