When I take the Assault class, I'd like to work as a diligent reviver. But in many cases (about 60% subjectively), although I can see the heartbeat symbol over the lying team mate, I cannot revive him: Nothing happens when I apply the paddles.
And a couple of seconds later he indeed taps out.
This has been breaking my heart and haunting my dreams.
So please help me, my fellow doctors: Is there some mechanism I don't know behind this, like a time to precharge or something like that?