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该机为LA7688A单片机,CPU采用康佳专用的ST637884/FKI。其前身是ST6368/ST6367,除保留先进功能(如:内含存储器、中文菜单显示等)外,也去掉了如“童锁”等陈旧内容,新增加了开机后显示“福”字,若无信号则几秒钟后消失,然后由CPU内部软件“无信号蓝屏静噪”,同时静音,无需外围“无信号蓝屏形成电路”。当该CPU外围某些元件损坏时表现出的故障现象极有个性,会给经验不足的维修人员误解。故障现象:据用户讲,当时电视机在关机(待机)状态,见到电闪后就急忙拔下了电源插头,当时雷还没有
The machine is LA7688A microcontroller, CPU Konka dedicated ST637884 / FKI. Its predecessor is ST6368 / ST6367, in addition to retain advanced features (such as: memory, Chinese menu display, etc.), but also removed such as “child lock” and other obsolete content, the new added after boot shows “blessing” Signal is disappeared after a few seconds, and then by the CPU internal software “no signal mute blue screen” at the same time mute, no external “no signal blue screen form a circuit.” When the CPU peripheral components damaged when the performance of the phenomenon of great personality, will give inexperienced maintenance personnel misunderstood. Symptom: According to the user speaking, when the TV is turned off (standby) state, immediately after the flash to see unplugged the power plug, when the thunder did not