由于科学技术的发展，电子产品的可靠性已相当高，特别是集成电路损坏较少，电子琴也不例外。笔者修过相当数量的各型电子琴，最常见的有以下三类故障：一、电子琴插入稳压电源后面板电源灯不亮或时亮时不亮无声。为析与检修：面板电源灯不亮，一般为外援稳压电源未加入，或琴 Due to the development of science and technology, the reliability of electronic products has been quite high, especially less damage to integrated circuits, the keyboard is no exception. The author repaired a considerable number of various types of keyboards, the most common of the following three types of failure: First, the keyboard into the power supply backlight power light does not shine or when the light is not lit. For the analysis and maintenance: Panel power light does not shine, usually for foreign aid power supply has not been added, or piano