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例1.故障现象:接通电源主开关后,该机不是先进入“待机”状态,而是直接进入工作状态,且遥控关机失灵。分析检修:用遥控器反复进行“开机/待机”操作,仔细观察画面的变化情况。当由“开机”状态转为“待机”状态时,电视信号强度有减弱的迹象,而且切换频道功能失灵;由“待机”状态转为“开机”状态时,先出
Example 1. Symptom: After the power switch is turned on, the machine is not in the “standby” state, but directly into the working state, and remote shutdown failure. Analysis and maintenance: Repeatedly with the remote control “boot standby ” operation, carefully observe the picture changes. When the status is switched from “power on ” to “standby ”, the TV signal strength is weakened, and the channel switching function is failed. When the status is changed from “Standby” to “Power On” Out