一张全新台湾产兼容Hyaes9624卡在线空置半月余,再使用时显示出错信息:无拨号音.检查卡上元件,发现电话线分流后FAX—Modem一侧限流的两个1/8W10Ω电阻的漆膜都被烧穿一处,取下量得均已烧断,说明此后线路有严重短路,沿线下查,到整流桥输出端测得电阻极小,原因是稳压管(保护用)已击穿短路,于是更换电阻与稳压 A new Taiwan-compatible Hyaes9624 card is left unoccupied for more than half a month online, displaying an error message when it is used again: No dial tone. Check the card’s components and find that the two 1 / 8W10Ω resistor lacquers on the FAX-Modem side are shunted after the telephone line is shunted The film is burned through a place, have been taken off the amount of have been blown, indicating a serious short circuit after the line, check along the line to the output of the rectifier bridge measured resistance is very small, because the regulator (protection) has hit Wear a short circuit, so replace the resistor and regulator