冰心 发表于 23-4-1 18:58:00

莽牛MN78维修开关与电路板修复

因为改了电机。所以开关线变得无处安放。导致开关线断开。经过修复焊接，电流表测试通电没问题后正常。
http://image.rcfans.com/pic/20230401/1680346427119843_495.jpg?x-oss-process=image/watermark,image_cGljLzIwMjExMDA2L29zc18xNjMzNTM0ODIxOTgzXzg2NF81MzNfNTYucG5n,t_50,g_se,x_20,y_20
http://image.rcfans.com/pic/20230401/1680346427126120_690.jpg?x-oss-process=image/watermark,image_cGljLzIwMjExMDA2L29zc18xNjMzNTM0ODIxOTgzXzg2NF81MzNfNTYucG5n,t_50,g_se,x_20,y_20
但是装上之后还是不能用。经过用电流表排除法，排除了电源。排除了开关。好像是电路板故障。电路板拆下来后发现竟然有腐蚀。其中一条金属排线竟然腐蚀断了。可以看到照片里面有明显的气泡。但是那些气泡并没有处理，因为面积比较大，不影响。
http://image.rcfans.com/pic/20230401/1680346599456106_540.jpg?x-oss-process=image/watermark,image_cGljLzIwMjExMDA2L29zc18xNjMzNTM0ODIxOTgzXzg2NF81MzNfNTYucG5n,t_50,g_se,x_20,y_20
http://image.rcfans.com/pic/20230401/1680346599457458_188.jpg?x-oss-process=image/watermark,image_cGljLzIwMjExMDA2L29zc18xNjMzNTM0ODIxOTgzXzg2NF81MzNfNTYucG5n,t_50,g_se,x_20,y_20
http://image.rcfans.com/pic/20230401/1680346599458248_439.jpg?x-oss-process=image/watermark,image_cGljLzIwMjExMDA2L29zc18xNjMzNTM0ODIxOTgzXzg2NF81MzNfNTYucG5n,t_50,g_se,x_20,y_20
经过简单的处理，已经焊上了。现在遥控车终于可以正常行驶了。
http://image.rcfans.com/pic/20230401/1680346647864623_322.jpg?x-oss-process=image/watermark,image_cGljLzIwMjExMDA2L29zc18xNjMzNTM0ODIxOTgzXzg2NF81MzNfNTYucG5n,t_50,g_se,x_20,y_20
http://image.rcfans.com/pic/20230401/1680346648033784_219.jpg?x-oss-process=image/watermark,image_cGljLzIwMjExMDA2L29zc18xNjMzNTM0ODIxOTgzXzg2NF81MzNfNTYucG5n,t_50,g_se,x_20,y_20
并且我优化了一下开关的位置。
http://image.rcfans.com/pic/20230401/1680346662425249_726.jpg?x-oss-process=image/watermark,image_cGljLzIwMjExMDA2L29zc18xNjMzNTM0ODIxOTgzXzg2NF81MzNfNTYucG5n,t_50,g_se,x_20,y_20

冰心 发表于 23-4-1 22:58:17

路过的大佬点个赞吧，要不我升级感觉太慢了，还500多分才能一个小时回复超过4条

caolemeng 发表于 23-4-2 15:12:43

好手工

狂拍威震天 发表于 23-4-8 12:11:48

楼主专业 给你点个赞

小y哥哥 发表于 23-4-13 01:24:34

楼主，您好请教一下升级方案
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