现在有些终端电视接收机(以下简称“电视机”) 采用了数字高频调谐器(以下简称“数字高频头”),但 数字高频头在市面上还不多见,尤其是在边远地区几 乎没有。下面结合维修实例来分析怎样用普遍使用的 普通高频头代换数字高频头。 ?; 电视机机型为北京2505G,故障现象为大 At present, some terminal television receivers (hereinafter referred to as “TV sets”) adopt a digital high frequency tuner (hereinafter referred to as “digital tuner”), but digital tuners are rare in the market, especially in remote areas almost none. The following combination of maintenance examples to analyze how to use the common use of ordinary tuner for digital tuner. ? TV models for the Beijing 2505G, the fault phenomenon is large