We have a Zenith tv with a bad tuner 175-2721. It has an F connector input. Will a 175-2720 Zenith tuner (RCA jack input) sub electronically for the 175-2721? In other words, is the input connector the only difference between these two tuners? Jeff Smith Smith TV Service 1930 Main St Newberry, SC 29108 803/276-9910 ***************************************************************************** Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/