大屏幕彩色电视机具有屏幕大、多制式、功能齐全、图象清晰、音质优美、操作简便等特点,已经成为现代社会人们学习、生活、娱乐等首选的视听设备之一,已经成为广大城乡人民家电消费的主流。大屏幕彩电的社会拥有量不断增加,机型品种不断更新,电路结构日趋复杂,都给使用和维修带来许多新的困难。即使那些熟悉普 Large-screen color TV with large screen, multi-format, full-featured, clear images, beautiful sound quality, easy operation and so on, has become the modern society of people learning, living, entertainment, etc. one of the preferred audio-visual equipment has become the majority of urban and rural people Consumer appliances mainstream. Large-screen color TV’s increasing social ownership, models continue to update the variety of circuits more complex structure, have brought many new difficulties in the use and maintenance. Even those familiar with Pu