故障表现为:热机花屏 故障分析:通电测试机子,未发现故障。于是老化煲机。在问题出现时,赶紧测量各组电压,发现U104处2.5V供电只剩下1.8V左右。于是代换U104,老化煲机故障机修到这里,终于修好值得探讨。。 |
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