杂牌彩电8873-6PR6无图像通病 接一旅馆报修三台杂牌机,故障均为开机有“T T…声,无图像,主芯片8873-6PR6,待机 B稳定,开机降至50V左右,拔掉偏转, B稳定,更换阻抗匹配器故障依旧,以为偏转短路,细查后原来竟是电源VD518(4148)开路惹的祸,三台换三只搞定 12345678910... 13 / 13 页下一页 |
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