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Job Description:

  • 1) Rebuilds cathode ray tubes used in television receivers and display instruments according to specifications, applying knowledge of electronics: Inspects tube for physical defects, such as cracks, scratches, burns, and pits to determine if tube is repairable.

  • 2) Tests display function, such as horizontal fade, color purity, and convergence to locate cause of malfunction, using test equipment.

  • 3) Cuts off glass neck holding electron gun, using hot wire or gas torch.

  • 4) Paints dag inside bulb to provide conductive surface, using brush.

  • 5) Places bulb and replacement electron gun in lathe equipped with gas torch to weld and anneal parts together.

  • 6) Operates ovens and pumps to seal and evacuate tube.

  • 7) Places rebuilt tube in chamber to age tube.

  • 8) Coats exterior surface of tube with dag, using spray gun.

  • 9) Tests tube function and operation for conformance to specifications.

  • 10) Buffs and polishes display screen surface to remove scratches, using power buffer and abrasive compound.




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End Of Job Description for: "TUBE REBUILDER"
DOT:   725.381-010

Job Number: 11520