Yes there are. According to the United States International Trade Commission, there are 6 manufacturers of CTVs in the United States (for TVs above 21 inches) - Five Rivers; Matsushita Kotobuki Electronics Industries of America, Inc.; Orion America, Inc.; Sanyo Manufacturing Corp.; Sony Corporation of America; and Toshiba America Consumer Products, Inc. These CTVs contain made in USA labels and are recorded by the Bureau of the Census as American manufactured televisions. Additionally, Hewlett Packard, and others are manufacturing flat paneled televisions for use as HDTVs.
If there was no domestic manufacturing of TVs in the United States, the Commission would NEVER have conducted a proceeding concerning the importation of televisions.