美的电磁炉C21-SK2103。开机显示正常,卡表电流0-11A,并重复显示。VR1[501]阻值正常。检查发现康铜丝开焊,焊好后,开机故障仍不排除,是R2【470】电阻开路,更换R2[470]开机正常。是通病。 |
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