Are you pointing the remote at the receiver?|Does the remote have fresh batteries?|Is only one device turning blue?|Are both devices turning blue but nothing is happening?|The following devices are known to be incompatible.|Yamaha HTR 6140|Arris DCX 3520E-M|OSD ATM-7 Speaker Selector device|SW-32988 Kit|SW-32988-RX Receiver Only |SW-32988-TX Emitter Only |SW-32988-X Transceiver|Wireless Distance: 200m (650 ft.) distance may vary due to obstacles|IR Receiver Distance: 7m (30 ft.)|IR Frequency: 20-60Khz|RF Frequency: 915 Mhz|Wirelessly communicates in the 915-917 MHz band|Power: 5V/0.5A|Optional Cables Included: 3 ft. receiver cable and 10 foot. dual head emitter cable|Blu-Ray Players (Sony LG Samsung Panasonic Yamaha)|Cable and DVR Boxes (U-Verse Dish VIP Fios Xfinity DirecTV Motorola Cisco Optimum TIVO)|AV Receivers (Denon Sony Onkyo Yamaha Samsung Bose LG Marantz)|Logitech Harmony Hub and Universal Remotes|Anything else that requires an IR signal! If your device does not work let us know which device and we will pay for any return shipping|Yamaha HTR 6140|Arris DCX 3520E-M|OSD ATM-7 Speaker Selector