What is a Television? Tele – Distance Vision - Image
Methods used in servicing Televisions Block Diagram Pictorial Diagram Schematic Diagram Troubleshooting Flowchart Instructional
Tools needed in servicing Televisions Pliers Knife Screwdrivers Alignment screw drivers Flashlight, tuner cleaner Jumper wires Cleaning cloth
Continuation… Soldering iron Digital multi-tester Cutter pliers Mirrors Logic probe
Instruments Color bar generator Degaussing coil Multi-tester Oscilloscope Pulsers and probes RF signal generator Sweep generator
Continuation… In-circuit transistor checker Color bar generator Tube tester
Replacement Components Set of resistors Set of capacitors Set of transistors Set of ICs Substitution yoke/flyback
Methods used in Isolating Problems Cause-and-effect reasoning – the most useful method Signal tracing – fault-finding technique Signal substitution – using instrument in detecting problems