4x0系列卫星接收机使用很广泛,由于生产厂家众多,用料鱼龙混杂,质量参差不一。用户在使用中普遍反映故障率较高,加上维修图纸资料奇缺,使得维修带来了很大的困难,好在这些4x0系列卫星接收机的电路基本是相同的,笔者以雷霆T430XP为例,实绘了该机的部分电路的线路图,并且分析其控制线路的特点、提出对其缺陷的改造、故障的检修方法,希望在实际应用中对有一定的动手能力的电子爱好者有所帮助。 4x0 series satellite receiver is widely used, due to the large number of manufacturers, the use of mixed materials, the quality varies. Users generally reflect the high failure rate in use, coupled with the lack of maintenance drawings and information, making maintenance has brought great difficulties, Fortunately, these 4x0 series satellite receiver circuit is basically the same, the author Thunder T430XP as an example , The real part of the aircraft circuit diagram of the aircraft, and analyze the characteristics of the control circuit, put forward its defects in the transformation, fault repair methods, hoping in the practical application of a certain ability of electronic enthusiasts help.