Things You'll Need
Instructions
Turn off the Xbox 360 and television.
Disconnect the AV cable from the AV port at the back of the Xbox 360.
Disconnect the AV cable connectors from the television.
Reconnect the AV cable to the Xbox 360 and television. Ensure the connectors at the television go into the correct ports. The connectors and ports are color-coded and the color of each connector should match its corresponding port.
Turn the Xbox 360 and television back on.
Try a new AV cable if the problem persists.