西門子MP277顯示屏啟動后白屏維修檢測

西(xi)門(men)子(zi)觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)(ping)(ping)(ping)專業維(wei)(wei)(wei)(wei)(wei)(wei)修(xiu)公司，維(wei)(wei)(wei)(wei)(wei)(wei)修(xiu)故障：西(xi)門(men)子(zi)觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)(ping)(ping)(ping)無顯(xian)(xian)示(shi)維(wei)(wei)(wei)(wei)(wei)(wei)修(xiu)，西(xi)門(men)子(zi)觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)(ping)(ping)(ping)亮度(du)看不(bu)(bu)清楚維(wei)(wei)(wei)(wei)(wei)(wei)修(xiu)，黑(hei)屏(ping)(ping)(ping)(ping)(ping)(ping)維(wei)(wei)(wei)(wei)(wei)(wei)修(xiu)，花屏(ping)(ping)(ping)(ping)(ping)(ping)維(wei)(wei)(wei)(wei)(wei)(wei)修(xiu)，白屏(ping)(ping)(ping)(ping)(ping)(ping)維(wei)(wei)(wei)(wei)(wei)(wei)修(xiu)，液晶(jing)屏(ping)(ping)(ping)(ping)(ping)(ping)顯(xian)(xian)示(shi)豎條維(wei)(wei)(wei)(wei)(wei)(wei)修(xiu)，液晶(jing)屏(ping)(ping)(ping)(ping)(ping)(ping)顯(xian)(xian)示(shi)橫條維(wei)(wei)(wei)(wei)(wei)(wei)修(xiu)，液晶(jing)屏(ping)(ping)(ping)(ping)(ping)(ping)顯(xian)(xian)示(shi)多畫面維(wei)(wei)(wei)(wei)(wei)(wei)修(xiu)，以及液晶(jing)屏(ping)(ping)(ping)(ping)(ping)(ping)顯(xian)(xian)示(shi)疑(yi)難雜癥均可維(wei)(wei)(wei)(wei)(wei)(wei)修(xiu)，觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)(ping)(ping)(ping)通(tong)訊不(bu)(bu)上(shang)維(wei)(wei)(wei)(wei)(wei)(wei)修(xiu)，觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)(ping)(ping)(ping)開機走(zou)一(yi)半不(bu)(bu)動維(wei)(wei)(wei)(wei)(wei)(wei)修(xiu)，西(xi)門(men)子(zi)觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)(ping)(ping)(ping)開機不(bu)(bu)能(neng)進入(ru)程序維(wei)(wei)(wei)(wei)(wei)(wei)修(xiu)，指示(shi)燈(deng)(deng)不(bu)(bu)亮維(wei)(wei)(wei)(wei)(wei)(wei)修(xiu)，觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)(ping)(ping)(ping)死機維(wei)(wei)(wei)(wei)(wei)(wei)修(xiu)，西(xi)門(men)子(zi)觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)(ping)(ping)(ping)燈(deng)(deng)管不(bu)(bu)亮維(wei)(wei)(wei)(wei)(wei)(wei)修(xiu)，觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)(ping)(ping)(ping)玻璃爛維(wei)(wei)(wei)(wei)(wei)(wei)修(xiu)更換(huan)，觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)(ping)(ping)(ping)觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)偏移維(wei)(wei)(wei)(wei)(wei)(wei)修(xiu)，觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)(ping)(ping)(ping)不(bu)(bu)能(neng)觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)維(wei)(wei)(wei)(wei)(wei)(wei)修(xiu)，觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)(ping)(ping)(ping)一(yi)半可以觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)另一(yi)半不(bu)(bu)能(neng)觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)維(wei)(wei)(wei)(wei)(wei)(wei)修(xiu)，觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)(ping)(ping)(ping)不(bu)(bu)能(neng)校(xiao)準維(wei)(wei)(wei)(wei)(wei)(wei)修(xiu)，觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)(ping)(ping)(ping)無背光維(wei)(wei)(wei)(wei)(wei)(wei)修(xiu)，觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)(ping)(ping)(ping)高壓板銷售(shou)更換(huan)，觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)屏(ping)(ping)(ping)(ping)(ping)(ping)燈(deng)(deng)管銷售(shou)更換(huan)，西(xi)門(men)子(zi)觸(chu)(chu)(chu)摸(mo)(mo)(mo)(mo)板銷售(shou)更換(huan)

壓包(bao)輸入電路的(de)各(ge)三極管及元件(jian)正(zheng)常。初步判(pan)定高(gao)壓包的初級低壓供電電路正(zheng)常，
接下來要區(qu)分是高壓包(bao)壞還(huan)是燈管壞，
高壓包(bao)輸(shu)出外接燈(deng)管。亮的(de)話就是(shi)屏(ping)的(de)燈(deng)管問題，不亮就是(shi)高壓包(bao)的(de)問題。
而我手頭上(shang)(shang)有燈(deng)管(guan)(guan)測(ce)試儀，故直(zhi)接(jie)(jie)使用燈(deng)管(guan)(guan)測(ce)試儀，斷開(kai)(kai)顯示(shi)器的(de)電源，測(ce)試儀通電，把燈(deng)管(guan)(guan)于(yu)高(gao)壓(ya)板的(de)連接(jie)(jie)線斷開(kai)(kai)后，連接(jie)(jie)到測(ce)試儀上(shang)(shang)，測(ce)試儀上(shang)(shang)電燈(deng)管(guan)(guan)不亮。說(shuo)明燈(deng)管(guan)(guan)已壞。
西門子MP277顯示屏啟動后白屏維修檢測

為了準確和穩妥，又取好的(de)(de)(de)燈管(guan)來連接到機(ji)(ji)器的(de)(de)(de)高壓輸出端，上(shang)電燈管(guan)正常(chang)點亮，由(you)(you)些(xie)確定(ding)確實是屏(ping)(ping)(ping)里面的(de)(de)(de)燈管(guan)壞了，該(gai)機(ji)(ji)器上(shang)所用的(de)(de)(de)屏(ping)(ping)(ping)燈管(guan)是L型的(de)(de)(de)，由(you)(you)于手頭有現成的(de)(de)(de)屏(ping)(ping)(ping)，故直接給客戶更換了一個新屏(ping)(ping)(ping)。
給(gei)整機上電測(ce)試，故障消失(shi)，屏顯(xian)畫面正
常了(le)，機(ji)器修復。
后對壞(huai)屏(ping)的燈(deng)管進行更換后，壞(huai)屏(ping)也(ye)修復(fu)好了