Television 1 Jess UEAB Picture Tube. Television 1 Jess UEAB Other names CRT cathode ray tube Screen Picture tube Picture bulb.

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Presentation transcript:

Television 1 Jess UEAB Picture Tube

Television 1 Jess UEAB Other names CRT cathode ray tube Screen Picture tube Picture bulb

Television 1 Jess UEAB

Materials used Glass Phosphor Stainless plate Steel Iron Tungsten Aluminum

Television 1 Jess UEAB

Television Phosphor number designation P 22 designated for color P 4 for black and white P 7 greenish-yellow light output P 1 CRT for oscilloscope P 11 for photographic application that emit blue light

Television 1 Jess UEAB Worldwide type designation system (WTDS) Type A – for television Type M – monitor AAA-DZZ designation for US tubes EAA-HZZ – European tubes JAA-MZZ – Japanese Tubes X – represent a color picture tube example of WTDS A6AAAOOX

Television 1 Jess UEAB Picture tube length and deflection Angle Length 9 – 25 inches degrees deflection angle 105 degrees horizontal deflection angle

Television 1 Jess UEAB

Picture tube bases

Television 1 Jess UEAB Picture tube parts

Television 1 Jess UEAB

Electrostatic focus

Television 1 Jess UEAB Picture tube PS

Television 1 Jess UEAB Flat picture tube

Television 1 Jess UEAB Porta TV

Television 1 Jess UEAB

Gun Arrangement

Television 1 Jess UEAB

Problem and Symptoms Low picture clarity No picture filament light ok high voltage ok Picture tube face turn to white Black spot on the middle of the picture tube Low phosphor Blurred picture

Television 1 Jess UEAB Tube testing Isolation technique Picture tube tester Variable Filament voltage supply Observation and analysis Second opinion

Television 1 Jess UEAB Picture Tube Replacement Cost effectiveness Availability Substitution (use tube manual) Picture tube size Brand Model number or serial numbers Structure and mounting Make or production code

Television 1 Jess UEAB