Fan does not start, green and red lights on the controller board do come on. No WAN lights though at all.Out of ideas.
1. Have you tried a different PSU?
2. Plug an old CDROM drive (or Hard drive) to a 5volt molex connector and re-power evrything.
3. "no WAN light", are those the 2 little lights below the ethernet connector on the controller board?
4. Do you have a sticker on the controller board with an IP addres? If not, most units have a factory default IP address of 192.168.1.99, so make sure - when you connect your ant directly to a computer , that the computer has an IP address 192.168.1.xxx (where xxx is any number between 2 and 253. other than 99).