Many devices connected to Control Center can be controlled directly and reliably using IP (internet protocol), BT (Bluetooth) or HDMI-CEC (Consumer Electronics Control) protocol. However many devices can't use these methods (e.g. TV, cable box, TiVo, many BluRay players, etc) so Control Center resorts to using IR (infrared) control. IR signals are digitally-coded pulses of infrared radiation to control functions such as power, volume, and channel changes. These devices require a direct "line of sight" with an IR transmitter to work properly. If the "line of sight" is changed/blocked, or the transmitter is moved out of alignment, IR control can become sporadic or stop working altogether.
If the device, or Control Center, is behind a closed cabinet door you will need to point an IR transmitter at the device in order to send a signal.
Things to check:
- Make sure Control Center has a line-of-sight to device. If you are using an IR transmitter, check its connection to Control Center's IR port and that the transmitter has line-of-sight to the device you want to control.
- Check that the transmitter wasn't knocked out of alignment. The transmitter should point at the sensor of the device you intend to control, not at Control Center.
- Try restarting the device and Control Center
- Make sure the device being controlled has the latest firmware. Many TVs are not always connected to the internet to receive updates.
To retest device control with Control Center, go to Settings> Devices> [device name]> Change Device
IR can be difficult to troubleshoot because it cannot be seen with the naked eye. Try using a digital camera (your phone's camera should work) to "see" the Infrared signal blasting from the Control Center as well as any attached emitters. The Control Center has emitters on the front and on each side that will light up when issuing IR commands like Volume UP/Down. This is also a good method to determine if your IR transmitter is actually sending a signal or not.
Note: The control center unit itself also emits IR from within. You may be able to communicate directly with your devices with IR by placing control center strategically within your entertainment system setup. IR needs line-of-sight so keep that in mind when placing control center and any IR blasters.