9吋电视机由于屏幕过小,已不太受欢迎,但是它的社会拥有量,仍然相当可观。现在北京等大城市的一些维修部门为满足用户希望能改装这种电视机的要求增设了9吋电视机换装12吋显象管的业务。可是就全国范围来讲,发展这种业务的部门不多。因此,笔者就改装这种机型的实践谈谈自己的体会,供读者参 The 9-inch TV has become less popular due to its small screen size, but its social presence is still considerable. Nowadays, some maintenance departments in big cities such as Beijing have added 9-inch TVs to fit the 12-inch picture tube in order to meet the user’s desire to convert such TVs. But on a national scale, there are not many departments that develop this business. Therefore, the author on the practice of modifying this model to talk about their own experience for readers reference