Jeff, Normally if there from the same model year...Example first letters in the model # determine model year.. Most of the problems on the 2100 series tuners have been loose connections on the rails inside the tuner... Bob, Bobs TV Worcester, ma woodman1@xxxxxxxx Main 508-853-1482 Fax 508-853-1480 ----- Original Message ----- From: <wjstv@xxxxxxxxxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: Thursday, December 11, 2003 8:57 AM Subject: [TechAssist] Zenith tuners 175-2720 175-2721 > 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/ > ***************************************************************************** Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/