I have the Kenwood HTB-505 home theater system. I have been trying to use the universal remote but I have only been able to get it to work with our RCA and Sharp TV's. There is a 13" samsung, an old hitatchi, a 13" panasonic, and a 27" or so Zenith that have yet to work. Am I doing anything wrong? Is there something special I should see happen because it says if I push a incorrect button it will exit setup mode. Is there more setup codes than given in the instructions or is it just not a great universal remote. I want to make sure it will work with a Toshiba 24"