大屏幕彩电以其视野宽阔、图像清晰、音质优美、功能齐全等特点倍受用户青睐,而且逐步成为家庭影院的主要成员。然而大屏幕彩电比普通彩电要复杂得多,电路上有较大的区别,为了提高图像质量和伴音音响效果,还增加了许多新技术、新电路,这些均增加了维修人员维修的难度。本文着重分析有关特殊电路,并介绍检修方法,以供参考。 Large-screen color TV with its wide field of vision, clear images, beautiful sound quality, full-featured and other features much users, and gradually become a major member of home theater. However, large-screen color TV is much more complex than ordinary color TV, the circuit has a larger difference, in order to improve image quality and sound effects, but also increased the number of new technologies and new circuits, which have increased the difficulty of maintenance personnel maintenance. This article focuses on the analysis of the special circuit, and introduced maintenance methods for reference.