TCL 3438D兩指示燈亮，三無

神雕小鬼 · 發(fā)表于 2015-7-24 14:33

故障現(xiàn)象：三無（燈亮）

機芯：飛利浦解碼OM88**（大屏幕）

機型： 2502D,2516B,2516D,2516DI,2516BI,2580DB,2510G,AT2575,2575D,
2515DZ,2580GI,2580G,2588DB,2511DI,2511D,2511DR,2511DZ,
2575DI,AT2515DZ,AT2590I,AT2590,AT2580D,AT2575D,AT2575DI,
AT2575DZ,AT2575F,AT2588D,AT2539,2939D,2939DR,2965D,2989D,
2913D,2975,2956D,2927D,2915DZ,2988DB,2916D,2988D,2980G,
2980GI,2980DB,2975D,2910G,2910DZ,2910D,2911,2911D,2911DI,
2911DZ,2980D,2988DF,2988DI,2975DI,AT2975D,AT2980D,AT2980DB
,2539D,2539DR,2539DI,3406D,3433D,3433DZ,3409D,3416,3416D,
3416DI,3418D,3416D(F),3438D,3480GI,3488GI,3460D,3488D,
34D106,AT3480DZ,AT3486DI,AT3460D,AT3416D(F),AT3488DZ,
2988G,2988D-F,2911Z,AT2990,AT2915DZ,AT2990I,AT2975F,
AT2975I,AT2988D,AT3480GI,3811DI,2589D,AT2556,AT2988,
AT2988DB,AT2956B,AT2911DZ,AT2915,AT2939,AT2956,AT2975Z,
AT2986Z,AT2575I,AT2586,3488BD,AT3486DZ

檢修過程：機型：3498GH 故障現(xiàn)象：兩指示燈亮，三無分析與檢修：開機顯像管燈絲亮，用萬用表測IC405 TDA8351場塊（9）腳供電電壓，結(jié)果無電壓。管機測R461電阻3.3Ω，阻值很大，拆下測量電阻已開路，更換IC405和R461電阻，故障排除。

故障板名稱：主板

故障元件位號： IC405和R461

處理措施： G更換IC405和R461

圖片：無

請叫我上路逗比 · 發(fā)表于 2015-7-24 17:02

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