本人修过多台M16M机心25-29吋彩电的电源,其故障为三无只有指示灯亮,换电源里Q801,Q802,Q803,D844可以正常开机。但真正的隐患并没有排除,不久又是三无。其真正的隐患是C811(2KV 1000P)和C837(2KV 1200P)这两个高压脉冲吸收电容在作怪。用万用表和电容表测量是没问题的。检修时一定要注意把它换新,不然后患无穷。
M16M机心还有几个通病,其内容如下:
1)无规律自动开关机和机前控制板失灵多数是CPU(IC1213)各脚虚焊造成的,把CPU重焊一遍一般都可以排除故障。
2)遥控和机控同时或有时失灵一般都是机上的控制面板和机心之间通信排线折断造成的。
3)一条横线一般是IC451集成各脚和枕校板(X-BOARD)上的大功率元件虚焊造成的。
4)雪花大或蓝屏一般是中放板(B-BOARD)上的电容C151(6.3V 220UF)漏液造成的,检修时可别忘了检查一下旁边双面穿孔的导电电阻(电路板是双面板)。
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R0E535M00CFK40 用户手册(Converter Board for Connecting M16C/5L and M16C/5M 组 64-pin 0.5mm pitch LQFP)
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2023-04-19 19:22:31
0
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2023-04-19 19:22:19
0
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2023-04-19 19:11:49
0
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2023-04-19 19:11:11
0
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2023-04-17 19:55:03
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2023-04-11 19:13:34
0
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E8a Emulator Additional Document for 用户手册(Notes on Connecting M16C/56 M16C/56D M16C/5L and M16C/5LD)
E8a Emulator Additional Document for 用户手册 (Notes on Connecting M16C/56 M16C/56D M16C/5L and M16C/5LD)
2023-04-11 19:12:00
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2023-04-10 18:37:39
0
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R0E535M00MCU00 用户手册(用于 M16C/5M、M16C/5L、M16C/56、M16C/5LD 和 M16C/56D 组的 E100 仿真器 MCU 单元)Rev.6.02
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2023-01-30 18:53:26
0
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