In this case it is highly likely that another signal is interfering with the wireless signal going from the transmitter to the headphones. This could be caused by other wireless devices, such as another pair of wireless headphones, active Bluetooth devices or a WiFi router.
To try and resolve the issue, please try the following:
- Make sure that the headphones are within the range of maximum distance to the transmitter (line of sight).
- Place the transmitter/receiver on a non-metallic surface (for example, avoid placing the transmitter/receiver on top of a desktop computer).
- Minimize the number of competing wireless devices, including cordless phones and remote-controlled toys within range of the receiver.