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例1 故障现象:开机场不同步,大约过10分钟后才能同步。分析检修:用万用表查μPC1031H2各脚电压,均正常。这种现象可能某元件老化或电容漏电,用烙铁对各元件加热,当烙铁靠近4C_4电解电容,图像稳定,换4C_41μF/25V钽电容后开机故障排除。此类机型一般都使用普通电解电容,这种电容性能较差,所以选用钽
Example 1 Symptom: open the airport is not synchronized, about 10 minutes before synchronization. Analysis and Maintenance: Check with multimeter μPC1031H2 the voltage of each leg, are normal. This phenomenon may be a component of aging or capacitor leakage, with a heating element on the iron, when the iron near the 4C_4 electrolytic capacitor, the image is stable, for 4C_41μF / 25V tantalum capacitor boot troubleshooting. Such models are generally used ordinary electrolytic capacitors, the performance of this capacitor is poor, so the choice of tantalum