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type="text/css"></style> <div id="ct" class="ct2 wp cl"> <div class="mn"> <div class="bm_haa cl"> <div class="bm_h cl"> <a href="http://www.oecr.com/portal.php?mod=rss&catid=61" class="y xi2 rss" target="_blank" title="RSS">订阅</a><h1 class="xs2">文章</h1> </div></div> <div class="kjkjb"> <div class="bm vw" style="margin-bottom:0;"> <div class="h hm"> <div class="zxtoux"><img src="http://www.oecr.com/uc_server/avatar.php?uid=54876&size=small" /></div> <h1 class="ph">液晶电视常见故障大汇总 </h1> <p class="xg1"> 时间：2016-4-29 11:22<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(2052)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=4375&idtype=aid" title="查看全部评论"><em id="_commentnum">5</em></a></p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=61" class="y xi2 rss" target="_blank" title="RSS">订阅</a></div> </div> <!--[diy=diysummarytop]--><div id="diysummarytop" class="area"></div><!--[/diy]--> <div class="s"> <div class="ss"><div><span>导读： </span>液晶电视常见故障，无论什么电器使用久了都会出现各种各样的故障，今天我们来看一下液晶电视常见的故障</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content"><div>液晶电视常见故障大汇总</div><div style="text-align: center;"><p><a href="data/attachment/portal/201604/29/111940pnigh002233zj1z3.jpg" target="_blank"><img src="data/attachment/portal/201604/29/111940pnigh002233zj1z3.jpg"></a></p></div><div> 液晶电视常见故障，无论什么电器使用久了都会出现各种各样的故障，今天我们来看一下液晶电视常见的故障：</div><div><br></div><div><b>故障一：黑屏</b></div><div><b><br></b></div><div>屏幕要亮必须满足两个条件;第一，电源板到背光板的24V要正常。第二，BLKON/OFF启动脚电压要正常(一般在3.3V/4.95V).如果测得24V有异常应该是电源板有故障。如果BLK的电压没有，应该就是主板有异常，两个电压都有还是黑屏，可能就是背光板和屏本身坏。</div><div><br></div><div><b>故障二：开机保护</b></div><div><b><br></b></div><div> 开机屏幕闪下黑屏，如果出现此故障，在保护的时候<a href="http://opticaltest.oecr.com" target="_blank" class="relatedlink">测量</a>24V.BLK的启动电压是否正常，如果正常，那肯定是背光板坏，开机保护有声音一般都是背光板坏得比较多。(注意：厦华HU机型比较乱，电源板分好几种，有一种电源板后缀带个小板的，这块小板是起到背光控制的作用，他坏也会引起开机保护，有时候会出现老化不定时黑屏，但有声音。</div><div><br></div><div><b>故障三：无字符</b></div><div><b><br></b></div><div> 一开机屏幕没有PRIMA<a href="http://display.oecr.com" target="_blank" class="relatedlink">显示</a>出来没有蓝屏，背光灯是亮着的，引起这种故障有几个原因：第一，主板。第二，逻辑板。第三，屏本身。主板有没有坏只要测量给逻辑板供电是否正常，正常电压一般是5V或者是12V，如果这个电压有可以肯定的判断出主板是好的。逻辑板只能更换，如果更换后故障依旧，那肯定是屏本身坏了。(注意：出现此故障主板坏的可能性很小，几乎可以不用申请主板)</div><div><br></div><div><b>故障四：白屏</b></div><div><b><br></b></div><div>出现白屏故障主板不用换，直接先代换逻辑板，如果故障依旧，那就是屏本身坏。</div><div><br></div><div><b>故障五：花屏</b></div><div><b><br></b></div><div> 如果出现花屏故障，最好提供照片，可以更进一步的把故障缩小。</div><div>上面为您介绍的就是液晶电视常见的一些故障，非专业人员切勿操作。</div><div style="text-align: center;"><p><a href="data/attachment/portal/201604/29/111945y7lp579pdcplzsv3.jpg" target="_blank"><img src="data/attachment/portal/201604/29/111945y7lp579pdcplzsv3.jpg"></a></p><p>欢迎关注光电<a href="http://news.oecr.com" 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name="comment_anchor_5964"></a> <dl id="comment_5964_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(5964, '4375');">引用</a> </span> <a href="http://club.oecr.com/space-uid-56988.html" class="xi2 xw1" c="1">zhutouhuasheng</a> <span class="xg1 xw0">2016-4-30 10:51</span> </dt> <dd>不错的内容</dd> </dl><a name="comment_anchor_5950"></a> <dl id="comment_5950_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(5950, '4375');">引用</a> </span> <a href="http://club.oecr.com/space-uid-21825.html" class="xi2 xw1" c="1">ryanshcn</a> <span class="xg1 xw0">2016-4-30 03:50</span> </dt> <dd>LZ文章给力，给回复下吧</dd> </dl><a name="comment_anchor_5946"></a> <dl id="comment_5946_li" class="ptm pbm bbda cl"> <dt class="mbm"> <span class="y xw0 xi2"> <a href="javascript:;" onclick="portal_comment_requote(5946, '4375');">引用</a> </span> <a 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