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液晶显示器出现花屏是什么原因造成的

2017-9-26 10:00:10      点击:

  HUAPINGSHISUOYOUXIANSHIQIDECHANGJIANBING,DANGRANYEBAOKUOYEJINGXIANSHIQILE,HUAPINGHUIYINGXIANGWOMENDEGUANKANXIAOGUO,NEIYEJINGXIANSHIQIWEISHENMEHUICHUXIANHUAPINGNI?CHUXIANHUAPINGDESHIHOUYAOZENMEJIEJUENI?

  YEJINGXIANSHIQICHANSHENGSHUIPINGTIAOWENDEYUANYIN:

  YI、WAIBUGANRAO

  RUXIANSHIQIDESHIYONGXIANCHANGFUJINYOUDIANHUOHUAHUOGAOPINDIANCIGANRAO,ZHEIZHONGGANRAOHUISHIXIANSHIQIDEXIANSHIHUAMIANCHANSHENGBAISEDESHUIPINGTIAOWEN。SUOYIZAIZHEIZHONGQINGKUANGXIAYAOJINLIANGBIMIANSHIYONGXIANSHIQI。

  ER、NEIBUGANRAO

  这种干扰会使显示器的显示画面出现黑色的水平条纹,遇到这种情况,可以打开机壳检查一下显示器内部是否有接触不良的地方,电源的输出端或输出变压器等有无问题。

  SAN、XIANSHIQIFENBIANLVSHEZHIBUDANG

液晶显示器

  DANGXIANSHIQIZAIWIN3.XHEWIN95ZHONGFENBIANLVSHEZHIBUZHENGQUESHI,QIDONGWindowsSHIJIUKENENGCHUXIANHUAPINGGUZHANG,JIHUAMIANFENCENG、DOUDONG、YANZHONGDESHENZHICHUXIANHEIPINGSIJIDEXIANXIANG。

  CHULIFANGFA:JINRUWIN3.XDESETUPHUOJINRUWIN95DEANQUANMOSHI,ZHONGXINSHEZHIXIANSHIQIDEXIANSHIMOSHIJIKE。

  SI、XIANCUNSUNHUAI

  DANGXIANCUNSUNHUAIHOU,ZAIXITONGQIDONGSHIJIUHUICHUXIANHUAPINGHUNLUANZIFUDEXIANXIANG。BIXUGENGHUANXIANCUNTIAO。

  WU、GUZHANGXIANXIANG

  YITAIAOKCAISEXIANSHIQI,SHIYONGYIDUANSHIQIHOUCHUXIANGUZHANG。JISUANJIKAIQIHOU,XIANSHIQIWUXIANSHI,YUE5FENZHONGHOU,XIANSHIQICAIZHUJIANLIANGQILAI,DANPINGMUYOUBUJIAOAN,QIEYOUSHUIPINGHEIXIAN,ZHIHOUHUANMANZHUANRUZHENGCHANGZHUANGTAI。  

  故障分析:由于荧光屏一半较暗,怀疑行扫描电路阻尼二极管性能不良。此显示器行扫描管与阻尼管为一体,产生故障的可能性很小。用万用表测量行输出级电源电压为75V,当显示器转为正常后测量没有变化。