收到同行送来的故障机壹台TCL L40P21FBD液晶电视,故障表现为红灯亮,死机,拆机测R201,R202对地无电压,顺路查L150无电压。查R867变质,代换680欧电阻修复。此机还有一个通病:5.5V 升高,烧1.2V,R856变质。 |
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