A more permanent method is to remove pin 19 (Video Out) from the SCART plug that is put into the TV, preventing a signal from being broadcast by the TV into the cable, so it cannot cross-talk with the incoming signal.
A more permanent method is to remove pin 19 (Video Out) from the SCART plug. This SCART plug is put into the TV. Pin 19 (Video Out) from the SCART plug is preventing a signal from. This SCART plug is put into the TV. Pin 19 (Video Out) from the SCART plug was being broadcast by the TV into the cable. This SCART plug is put into the TV. It cannot cross-talk with the incoming signal.