當(dang)我們在使(shi)用的(de)時(shi)候(hou)經常(chang)會(hui)遇到一(yi)些小小的(de)故障，這些故障就(jiu)會(hui)導致我(wo)們(men)的(de)電(dian)源開關(guan)在使用中不能夠(gou)正(zheng)常(chang)運作，今天我(wo)們(men)飛天鷹(ying)科技就(jiu)來為(wei)您介紹(shao)一(yi)下(xia)電(dian)源故障時(shi)的(de)檢(jian)查方法。

看：打開電(dian)源(yuan)的外殼，檢查(cha)保險絲是(shi)否(fou)熔(rong)斷(duan)，再觀察電(dian)源(yuan)的內部情況，如果發現(xian)電(dian)源(yuan)的PCB板上有燒焦處(chu)或(huo)元(yuan)件破(po)裂，則(ze)應重點檢查(cha)此處(chu)元(yuan)件及相關(guan)電(dian)路元(yuan)件。

聞：聞一下電源內部是否有糊味(wei)，檢查是否有燒焦的元器件(jian)。

問：問一下電源(yuan)(yuan)損壞的(de)經過，是否對(dui)電源(yuan)(yuan)進行違規操作。

量(liang)：沒通電(dian)(dian)(dian)(dian)前，用萬用表(biao)量(liang)一下高壓電(dian)(dian)(dian)(dian)容兩端的(de)(de)(de)電(dian)(dian)(dian)(dian)壓先。如果是電(dian)(dian)(dian)(dian)源(yuan)適配器(qi)不(bu)起(qi)振或開(kai)(kai)關管(guan)開(kai)(kai)路(lu)引起(qi)的(de)(de)(de)故障(zhang)，則(ze)大多數情況下，高壓濾波電(dian)(dian)(dian)(dian)容兩端的(de)(de)(de)電(dian)(dian)(dian)(dian)壓未泄放(fang)悼，用萬用表(biao)測(ce)量(liang)AC電(dian)(dian)(dian)(dian)源(yuan)線兩端的(de)(de)(de)正(zheng)反向電(dian)(dian)(dian)(dian)阻(zu)及電(dian)(dian)(dian)(dian)容器(qi)充(chong)電(dian)(dian)(dian)(dian)情況，電(dian)(dian)(dian)(dian)阻(zu)值(zhi)不(bu)應(ying)過低，否則(ze)電(dian)(dian)(dian)(dian)源(yuan)內部可能存在短路(lu)。電(dian)(dian)(dian)(dian)容器(qi)應(ying)能充(chong)放(fang)電(dian)(dian)(dian)(dian)。脫開(kai)(kai)負載，分別(bie)測(ce)量(liang)各組輸出端的(de)(de)(de)對地電(dian)(dian)(dian)(dian)阻(zu)，正(zheng)常(chang)時，表(biao)針應(ying)有電(dian)(dian)(dian)(dian)容器(qi)充(chong)放(fang)電(dian)(dian)(dian)(dian)擺動，最(zui)后指(zhi)示的(de)(de)(de)應(ying)為該路(lu)的(de)(de)(de)泄放(fang)電(dian)(dian)(dian)(dian)阻(zu)的(de)(de)(de)阻(zu)值(zhi)。