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首先多謝您指教了.我已經(jīng)檢查過了主焊接變壓器和集成控制變壓器.都沒問題.輸出正常.三相整流橋也是好的.大功率晶體管模塊也更換過了還是有好象是短路的現(xiàn)象.有10只100v6800uf并聯(lián)的電解電容器,看不出有什么毛病.我手頭沒有這么大的電容表,測不出.

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是達林頓管模塊,和整流模塊組成的