显示器故障判断与检修技巧（Display fault diagnosis and troubleshooting skills）.doc

显示器故障判断与检修技巧（Display fault diagnosis and troubleshooting skills） Display fault diagnosis and troubleshooting skills , 1995-01-06 A display and fault type The 1. line break fault There is a common power line fault, fuse, printed circuit boards, the fracture resistance capacitance transistor pin breakage or sealing etc.. The 2. the short circuit fault This fault usually occurs between densely printed circuit boards or integrated circuit pins, and short circuits caused by solder and exposed leads are common. In addition, components or components collide and shield, between the metal plate and a radiating plate are in contact with each other and cause short circuit phenomenon is rare. The The 3. leakage fault Leakage faults are: the The electrolytic capacitor heating and leakage, if found in the electrolytic capacitor in the high temperature rise and around the heating element to cause, or see the electrolytic capacitor leakage of liquid in vitro (shell cracking deformation), generally considered capacitor leakage. The Leakage of printed wiring and components, usually caused by dirt, dust, or water vapor. The 4. the overheating fault General department potentiometer and other adjustable components loose, plug contact oxidation or loose, welding parts caused by poor. The The other 5. fault Here refers to the other fault are: resistance overload charred (can smell the burning surface discoloration of the smell of paint); printing plate element overheated high-voltage ignition (burnt smell and taste carbonized resin); power transformer overload (rapid heating, and can smell the burning varnish and resin flavor); components or lines (visible flashing discharge ignition linear or spark. The tube fires, sometimes accompanied by a violet or blue light in the tube neck. High-voltage ignition often can smell the odor of ozone); core inductance in loss or fragmentation (generally visible); tube leakage or broken pole (mostly available visible); low frequency (hear screech); swit