上门去一客户家里维修户户通,故障表现为是显示T01信号中断,通电开机无信号,拿回检修发现电源板好几个电容鼓包,更换后依旧无信号,但左右旋电压正常,检查周围电路也没发现异常,直接更换AV2028芯片。终于不在显示T01了,故障修复。 |
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