自动搜索不存台是彩电的一种常见故障,特别是使用了几年以后的机器更易发生此类故障。近几年,生产出一些新型彩电,自动搜索存台功能是利用软件通过I~2C总线传递信息来实施控制,给我们检修自动搜索不存台故障的工作提出了新问题。另外,已往电子刊物上很多文章对自动搜索不存台的分析及故障判断方法也存在着不准确、不全面之处。本文对有关问题,发表个人见解。一、自动搜索选台原理彩电CPU收到自动搜台指令后,从其频段选择端 Automatic search is not a failure of the TV is a common fault, especially after using the machine a few years later, such failures are more likely to occur. In recent years, to produce some new color TV, automatic search deposit function is to use software to transfer information through the I ~ 2C bus to implement the control, to our overhaul automatically search for failure to put forward a new problem. In addition, many articles in previous e-journals also have inaccuracies and incompleteness in the methods of automatic search and failure analysis. This article on the issue, express my opinion. First, the automatic search channel selection principle Color TV CPU automatically receive station search instructions, select from its band