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反复损坏e13005-2三极管的原因是什么

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Post time: 2018-2-11 22:10:27
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一台咖啡机上的电源板,无低压输出。经查是开关管e13005-2的其中一只损坏。换上好的同型号管子,接通电源的瞬间有电压输出,几秒钟后就停止了。管子又损坏了。反复换了几次都是如此,查遍了周围的元件没发现有明显损坏的。问题在哪儿呢?真是搞不明白了。
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Post time: 2018-2-11 22:57:51
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两只管子最好一并更换,再查一查尖峰吸收回路和滤波电解电容。
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Post time: 2018-2-12 14:23:44
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也可能管子质量太差。
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Post time: 2018-2-12 14:25:57
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也可能管子质量太差。
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Post time: 2018-2-12 15:01:15
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大滤波.尖峰吸收
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 Author| Post time: 2018-2-12 20:56:40
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名品电器维修 发表于 2018-2-11 22:57
两只管子最好一并更换,再查一查尖峰吸收回路和滤波电解电容。

好的,我查看下。
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