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无彩色故障原因分析遥控彩电在接收彩色电视信号时,所有频道均能接收到清晰的黑白图像而无彩色,这种故障(简称“无彩色”)现象,绝大多数都是色度通道电路工作异常引起的,少数是AFT电路工作异常引起AFT参数发生变化所致;对于总线控制的彩电,当总线数据异常、或微处理器时钟晶体
Analysis of the causes of non-color failure Remote color TV in receiving color television signals, all channels can receive clear black and white images without color, the failure (referred to as “no color”) phenomenon, the vast majority of chroma channel circuit work Abnormal caused by a small number of AFT circuit abnormalities caused by changes in AFT parameters; for bus-controlled color TV, when the bus data is abnormal, or the microprocessor clock crystal