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大同 V32M300 液晶電視可開機無畫面。 (P0016)
Repair & maintain
Repair Title
大同 V32M300 液晶電視可開機無畫面。
RSN
P0016
Status
Return
Maintain Date
2019/05/09
Next Maintain
2019/11/05
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液晶電視
TaTung
V32M300
--
Repair History
Date
Content
2019-05-10
Issue
大同 V32M300 液晶電視可開機無畫面,屏幕上沾黏AB膠。
Analysis
判定為 LED 背光板有問題,輸出電壓只有 0.3V,背光短路測量為斷路,應該是部份燈芯燒毀。
Repair
屏幕上沾黏AB膠刮除,拆開背光板實測有兩棵燈珠斷路,一棵燈珠短路,更換整組代用背光條,燈珠位置稍有差異,將反光片挖出新孔距;更換 LED 主控晶片,完修。
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