Television 1 Jess Role @ UEAB Picture Tube. Television 1 Jess Role @ UEAB Other names CRT cathode...
Transcript of Television 1 Jess Role @ UEAB Picture Tube. Television 1 Jess Role @ UEAB Other names CRT cathode...
![Page 1: Television 1 Jess Role @ UEAB Picture Tube. Television 1 Jess Role @ UEAB Other names CRT cathode ray tube Screen Picture tube Picture bulb.](https://reader038.fdocuments.in/reader038/viewer/2022102713/56649cd85503460f949a0718/html5/thumbnails/1.jpg)
Television 1 Jess Role @ UEAB
Picture Tube
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Television 1 Jess Role @ UEAB
Other names
• CRT cathode ray tube• Screen• Picture tube• Picture bulb
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Television 1 Jess Role @ UEAB
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Television 1 Jess Role @ UEAB
Materials used
• Glass• Phosphor• Stainless plate• Steel • Iron• Tungsten• Aluminum
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Television 1 Jess Role @ UEAB
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Television 1 Jess Role @ 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
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Television 1 Jess Role @ 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
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Television 1 Jess Role @ UEAB
Picture tube length and deflection Angle
• Length 9 – 25 inches• 50- 114 degrees deflection angle• 105 degrees horizontal deflection
angle
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Television 1 Jess Role @ UEAB
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Television 1 Jess Role @ UEAB
Picture tube bases
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Television 1 Jess Role @ UEAB
Picture tube parts
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Television 1 Jess Role @ UEAB
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Television 1 Jess Role @ UEAB
Electrostatic focus
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Television 1 Jess Role @ UEAB
Picture tube PS
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Television 1 Jess Role @ UEAB
Flat picture tube
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Television 1 Jess Role @ UEAB
Porta TV
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Television 1 Jess Role @ UEAB
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Television 1 Jess Role @ UEAB
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Television 1 Jess Role @ UEAB
Gun Arrangement
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Television 1 Jess Role @ UEAB
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Television 1 Jess Role @ UEAB
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Television 1 Jess Role @ UEAB
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Television 1 Jess Role @ UEAB
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Television 1 Jess Role @ UEAB
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Television 1 Jess Role @ UEAB
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Television 1 Jess Role @ UEAB
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Television 1 Jess Role @ UEAB
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Television 1 Jess Role @ UEAB
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Television 1 Jess Role @ UEAB
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Television 1 Jess Role @ UEAB
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Television 1 Jess Role @ UEAB
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Television 1 Jess Role @ UEAB
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Television 1 Jess Role @ UEAB
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Television 1 Jess Role @ UEAB
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Television 1 Jess Role @ UEAB
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Television 1 Jess Role @ UEAB
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Television 1 Jess Role @ UEAB
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Television 1 Jess Role @ 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
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Television 1 Jess Role @ UEAB
Tube testing
• Isolation technique • Picture tube tester• Variable Filament voltage supply• Observation and analysis• Second opinion
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Television 1 Jess Role @ 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
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Television 1 Jess Role @ UEAB
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Television 1 Jess Role @ UEAB