Problem with LAN in Wi Fi router HUAWEI

Hi everybody! I have router Huawei HG8245T, it has 4 LAN ports but only lan 1 is working, 2,3,4 are not. I needed to connect TV, I put cable to lan 1 everything was good, but when I tried others there was no connection. I need TV and PC to have internet, may be there is something in settings?
