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