试调枕较电位器RP951,图象有轻微变化但无法将其调好. 用示波器测V957的集电极波形,发现波形和正常机器的完全一样,随意确定枕较电路是好的,故障在V957以后.测R956正常,拆下C958测量,发现已无容量,更换C958后图象线性恢复正常. |
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