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笔者最近修一台彩电,故障现象可以说是常见的,但检修出的结果却是很少见的。故障现象:遥控电路时而正常,时而不正常,正常时,面板按键、遥控器操作都应用自如,不正常时,面板按键、遥控器操作都不起作用,但每次用开关开机都能正常打开。分析与检修:根据故障现象首先排除遥控器的故障,初步判断故障原因如下:(1)微处理器工作不正常;(2)面板按键存在漏电粘连现
I recently repair a color TV, failure can be said to be common, but overhauling the results are rare. Symptom: Remote control circuit sometimes normal, sometimes not normal, normal, panel buttons, remote control operations are free to use, when not normal, the panel buttons, the remote control operation does not work, but each time you turn on the switch can be normally opened . Analysis and Maintenance: According to the fault phenomenon first ruled out the remote control fault, the initial judge the cause of the fault are as follows: (1) the microprocessor is not working properly; (2)