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故障现象:通电后,不能开机。检修方法:首先检测待机时电源有无电压输出,若无,则检测ICl5(供电脚)电压是否正常。若无电压,则检查ICl5是否内部短路。若内部未短路,则检查R96与R97之间是否有电压,若有电压,但R96另一端无电压输出,则检查R96是否不良。实际检修中,因R196开路而引起此类故障较常见。荨
Symptom: power, can not boot. Maintenance methods: First, test the power supply with or without standby voltage output, if not, then test ICl5 (power supply pin) voltage is normal. If no voltage, then check ICl5 is internal short circuit. If the internal is not short-circuited, check if there is voltage between R96 and R97. If there is voltage but there is no voltage output at the other end of R96, check whether R96 is bad. The actual maintenance, due to R196 open circuit caused such failures are more common. Nettle