收到同行送来的故障机壹台海信LE4D32EC260JD液晶电视,故中表现为通电开机指示灯不亮,拆机检查发现此机主板上12V二个电容烧黑。同时发现铜皮烧断。用细线连好,测量不短路了,然后将二个电容拆下,用一个47uF/35V代替。试机开机就正常了,此故障为通病故障(元件质量问题)。 |
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