改装机检修,本文由家电维修杂志论坛http://www.jdwx.cn/收集资料一例0 LG 【故障】现象:有时开机正常,有时开机【sw三无】。w 【故障】检修,本文由家电维修杂志论坛http://www.jdwx.cn/收集资料:该机采用新佳主板改装,三洋LA76818A电路。开机【sw三无】时+B无电压,重点检查开关dianyuan电源,开机正常与开机【sw三无】时检测电压如下表,当代换V511(A1015)后【故障】排除。 |
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