收到同行送来的故障机壹台海信LED32EC260JD液晶电视,故障表现为蓝灯慢闪无光故障,检测12V只有3.5V,拔掉至主板供电,12V供电可上升至10V,断电测量发现V817短路,这三个二极管是26V供电,原型号445E,用HBR5150代换后故障修复。 |
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