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求逆变器维修经验

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Post time: 2017-11-13 19:50:22
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本帖最后由 刘宇辉 于 2017-11-13 19:56 编辑

顾客拿来一台因短路烧坏的逆变器,更换所有测量出来的坏件后,上电试机故障灯亮,维修陷入困境,请师傅们指点!谢谢先!

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Post time: 2017-11-13 22:54:46
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Thank you for your post.
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Post time: 2017-11-14 10:24:55
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短路烧坏应是后级功率管烧坏 故障灯亮是不逆变 顺着功率管往前查 推动级或者芯片
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Post time: 2017-11-14 10:26:49
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我也收到一台
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 Author| Post time: 2017-11-14 10:38:15
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ysz123 发表于 2017-11-14 10:24
短路烧坏应是后级功率管烧坏 故障灯亮是不逆变 顺着功率管往前查 推动级或者芯片

烧坏的功放管都更换了。。。
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 Author| Post time: 2017-11-14 10:41:12
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ysz123 发表于 2017-11-14 10:24
短路烧坏应是后级功率管烧坏 故障灯亮是不逆变 顺着功率管往前查 推动级或者芯片

烧坏的功放管都更换了。。。
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Post time: 2017-11-14 11:03:47
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什么芯片的--------------------------
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Post time: 2017-11-14 11:10:39
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修这个太麻烦,楼主这个修好可以收多少。
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Post time: 2017-11-14 12:34:43
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修这个功率管全部换掉,小电阻三极管电容都要检查一变
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Post time: 2018-10-12 10:28:38 From the mobile phone
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我也接修一台现象和你的一样,估计是振荡推动的小板坏了,淘宝上沒有同型号的,现在还在那躺着呢。
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