收到同行送来的故障机壹台美的RT2103电磁炉，故障表现为电磁炉断续加热，首先更换820K大电阻，501可调，均无果，反复测来测去都正常，无意间看到501旁R2试着去测75K，拆下测断定坏，后换上8.1K贴片电阻，试机一切正常，测电流不到8A，交付给客户使用。 |
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