| 此故障大多为电源电路不良所所致。查市电正常，但熔断器FU1已发黑熔断，表明电路有严重短路。而查电磁加热电路熔断器FU2完好，电磁加热电路无故障。检查电源变压器T1及整流硅堆UR1、UR2、UR3，发现整流硅堆UR3已击穿，更换后通电试机，电磁炉工作正常。 |
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