You need to do a ping test, this will tell you if the bottom board is bad.
Ping test in Windows 8
1. Right click on windows Icon in lower left side, go to command prompt.
2. Click on Command Prompt.
3. A black box with a flashing cursor will open; this is the Command Prompt. Type “ping” and then hit the Space bar on your keyboard.
4. Type in the address you’d like to ping and then hit the Enter key on your keyboard. Wait for the ping results.
3. ping 192.168.1.2
If ping succesfull, your wifi-extender is alive and can connect to Phantom's Wi-Fi (binding is ok).
4. ping 192.168.1.1
If ping succesfull, TOP PCB board of Wi-Fi FPV module is alive
5. ping 192.168.1.10
If ping succesfull, BOTTOM PCB BOARD of WI-Fi FPV module is alive.
If ping fails - bottom PCB board (marked WM301_DM368) is broken