201212301102454.jpg (28.72 KB, 下載次數(shù): 3)
下載附件
保存到相冊
2015-7-24 12:45 上傳
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: 3498GH 故障現(xiàn)象:兩個指示燈亮,:三無,伴有行叫聲。 分析與檢修:用萬用表測Q402、D2500行管C極對地電阻,測出對地電阻很小,拆下Q402發(fā)現(xiàn)B/C/E已擊穿,一般換上新行管故障就能排除,但千萬不要忘記測量D408二極管,又是由于D408擊穿造成Q402擊穿。
故障板名稱: 主板
故障元件位號: Q402
處理措施: 更換Q402
圖片: 無
|