Can not reconnect cables to logic board?

I just opened my A1521 Airport Extreme to clean and lube the cooling fan, trying to solve the overheating problem. Everything has gone back together nicely until I got to the last step of connecting the two small connectors to the logic board. One of these goes to the indicator lamp, not sure about the other. After an hour of trying, I’ve had no success in getting the connectors to snap into place. The back of the connector is virtually smooth, so I don’t see how it is supposed to connect. It does not appear like the connectors broke when I removed them, but it seems like I’m trying to connect a smooth connector to a smooth surfaced circuit board. How are these supposed to connect?

Dan, that’s exactly what happened, I can now clearly see that both parts of the connectors pulled off of the board. The tear down instructions gave several warnings about being careful to not break the connector, and I was impressed with how easily and cleanly mine came off. Perhaps I will add a comment about what happened here. I left the reset switch connected to the board, and instead disconnect the actual switch from the case. My problem is with the LED and whatever the other is directly next to the LED. What is that one?