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TCL B55A858U液晶电视不开机故障修复

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Post time: 2018-12-8 11:55:02
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上门修一台TCL B55A858U液晶电视,据用户描述刚买一年多的电视没怎么看,刚开始是收看过程中自动关机,断电再开后又可以收看,现在是通电没反应(指示灯也不亮)。拆机通电测量电源板已经给主板供电12V和3.3V,测量主板其它稳压供电也正常,只好拆板回店。

回来后接编程器看打印信息不停显示EMMC:800:SD800,查资料得知是EMMC存储器坏,并且是此板通病!拆下EMMC芯片放RT8009H编程器上无法正常读取数据,确定EMMC已坏给用户报价。

此板是4K网络电视主板,拆机板卖价也不便宜,并且此板EMMC爱坏,所以决定更换全新的8G EMMC存储器!找到此板的RT809H编程器备份的EMMC数据,买回芯片后用RT809H编程器写入备份数据,通电打印信息已显示正常,接TV160七代主板测试工具图声正常!长时间试机也没出现自动关机现象,再次上门装板试机一切正常!最后上传使用正常的数据和维修照片。

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Post time: 2018-12-8 12:04:11
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谢谢楼主无私分享
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Post time: 2018-12-8 12:41:11
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谢谢楼主无私分享
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Post time: 2018-12-8 13:20:46
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谢谢楼主无私分享
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Post time: 2018-12-8 15:03:46
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师傅,你那电源板那里有卖呀,好像是万能的,介绍一下,我也想买
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jing9981 This user has been deleted
Post time: 2018-12-8 22:53:41
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Note: The author has been banned or deleted.
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Post time: 2018-12-8 23:22:52
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Thank you very much for your lesson.
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Post time: 2018-12-9 14:02:53
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师傅的手艺真是没得说!应该好好的向师傅学习学习。
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Post time: 2018-12-9 17:20:22
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师傅技术好,维修设备专业。
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Post time: 2018-12-10 17:10:09
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谢谢楼主无私分享
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