[Discuss-gnuradio] Technical Issue

Good afternoon sir, I have two USRP N210 Radio Modules.
Technical Issue:
Sir, one of USRP N210 radio module TX/RX port is working and RX2 port is not responding... and another radio module TX/RX port is not responding only TX/RX is responding... Please Suggest any remedies.

Thanks & Regards,
Suresh T,
Navstar Integrated Systems Pvt ltd,
9866212494