Why does “No Video Signal Detected” appear for a brief moment while watching or recording live TV?
The signal coming in may be too weak for the Showstopper to pick up. If you are using an antenna or cable without a cable box, try using a signal booster or video amplifier. If using a cable box, try using the A/V output of the box instead of the coaxial connection. This may also happen during transitions from television programs to commercial breaks and vice versa.