Tuner 2 Problem MAY be due to S-Video Cable
http://www.tivocommunity.com/tivo-vb/showthread.php?t=318681
http://www.tivocommunity.com/tivo-vb/showthread.php?t=333631
http://www.tivocommunity.com/tivo-vb/showthread.php?t=318681
http://www.tivocommunity.com/tivo-vb/showthread.php?t=333631