| 检查FU501未熔断，接下电源开关S501，S501内发出烧焦味，拆下发现其消火花电容已击穿，触点发黑氧化，估计S501接触不良，更换电源开关和消火花电容后故障机修到这里，终于修好值得探讨。。 |
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