The book considers SAPFIR televisions manufactured by OJSC Krasnoye Znamya plant in Ryazan (SAPFIR 3754TTs-6211F, SAPFIR 37TTs-5211F, SAPFIR 2331TB-431D, SAPFIR 2331TB-406D). The considered models, built on a modern element base, have high image and sound quality. Schematic diagrams are given. Recommendations are given to detect and eliminate the most common malfunctions. Detailed descriptions of the operation of the used microcircuits are presented.