收到同行送来的故障机壹台九阳JYC-21FS37电磁炉，故障表现为不通电，测300v正常，更换OB2226AP电源块故障不变，断电后300v电压泄放缓慢，分析电源沒起振，测R501红黑绿已开路，旧板上拆一红红绿换上之后故障机修到这里，终于修好值得探讨。，为验证还回原OB2226AP后一切正常。   |
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