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当时待修机较多,该机上壳前也对电压、电流测量一番,仅怀疑是开关管的质量不妥而已。只好草草上壳交货。不安的心还没放下,果然事情就来了。第二天一大早,机主已捧机入门,说是昨晚开机不到两个钟头就坏了。开壳一查,开关管已开路,找一进口管代换,开机声像正常,但“吱吱”声依然存在,只是略为小一点。为证实是否是上一颗管子质量不佳,便开机测试,直到
At that time to be repaired more, the aircraft also on the shell before the voltage and current measurements, doubts only that the quality of the switch is not properly it. Had to rush delivery. Uneasy heart has not been put down, really things come. Early the next morning, the owner had a good start, saying it was up less than two hours last night on the broken. Open shell check, the switch has been open, looking for an import substitution tube, boot sound like normal, but “creak” sound still exists, but slightly smaller. In order to verify whether the quality of a tube is poor, it will start the test until