[已解決] ASUS (S-25F) ATX 250W power 整批不穩~燒主板

会员29692

会员54474

会员29692

1.聲音~聽起來~感覺就像是我畫紅色圈圈那邊

2.觸發後~ATX 20pin 電壓

pin1 --> +3.368 VDC (Orange)

pin2 --> +3.368 VDC (Orange)

pin3 --> COM (Black)

pin4 --> +4.98 VDC (red)

pin5 --> COM (Black)

pin6 --> +4.98 VDC (red)

pin7 --> COM (Black)

pin8 --> PWR-OK = +4.98 VDC (Grey)

pin9 --> +5.88 VSB (Purple)

pin10 --> +11.74 VDC (Yellow)

pin11 --> +3.369 VDC (orange and brown)

pin12 --> -11.2 VDC (Blue)  

pin13 --> COM (Black)

pin14 --> PS-ON # (Green)

pin15 --> COM (Black)

pin16 --> COM (Black)

pin17 --> COM (Black)

pin18 --> -4.9 VDC (white)

pin19 --> +4.98 VDC (red)

pin20 --> +4.98 VDC (red)
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看起來~就只有 pin9 and pin12 電壓有異常,其他多還好

会员44188

把电源前端的几个电容换了，一般是50V 10uf左右的。

会员29692

会员31475

光耦可以用测量2极管的挡位去测...有点那边有没有短路或者断路.
里面的结构就是有点那边是光电2极管..没点那边是光电3极管..中间不连通.