日本电子维修技术 G460维修 三天激战 高清无码
板号: LA-5751P
故障:0.65掉电,掉电后无法触发
观众朋友们,大家好,我是阿金,今天为大家带来G460主板的维修。这个主板整整修了三天,为什么这么修这么久呢,下面请看
接到一台笔记本,插电后,电流上到0.54掉电,掉到0.020,按开关不能触发
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首先,各大电感对地值基本正常,电感电压,3V 5V 1.5V 桥供电,总线供电,CPU供电都已经出了,先刷个程序 涛声依旧,没有这么简单。
打开点位图,测得PWROK 有了
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DRAMPWROK有了,PLTRST 没有,
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再用示波器戳时钟芯片,没有波形。万用表盲测芯片外围比较大的电容,其中一个没有电压,打开图纸,此电压为VDD_3V3_1V5,此供电由转换芯片U16提供,再次通电测试芯片S 和D级,S级没有电压,G级也没有
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再往前一部,G级由B+通过百K电阻上拉来的,测得电阻无穷大,更换电阻后,时钟供电有了,波形也出来了。电压上到了0.9. 但是还是掉电,掉电后无法触发。
修了一天,下班了没修好,明天继续吧。
一上班,拿出主板,打开图纸点位,开始整。发现掉电无法触发的时候,PWROK为高电平,正常这个信号只有各电压正常时候,才会发送给桥这个信号,查图纸,这个信号是又EC 发出的经过一个电阻到桥
登录/注册后看高清大图待机状态下PWROK为高,明显不正常,断开链接EC的电阻,PWROK为低电平,EC这边依然为高,断定EC坏了,换EC吧。。忙活半天,EC换好了,心想这下差不多了吧。。。。 上电,电流1.2 1.3 掉电,重启。[img=554,483]data:image/png;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAMCAgMCAgMDAwMEAwMEBQgFBQQEBQoHBwYIDAoMDAsKCwsNDhIQDQ4RDgsLEBYQERMUFRUVDA8XGBYUGBIUFRT/2wBDAQMEBAUEBQkFBQkUDQsNFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBQUFBT/wAARCAHmAi0DASIAAhEBAxEB/8QAHwAAAQUBAQEBAQEAAAAAAAAAAAECAwQFBgcICQoL/8QAtRAAAgEDAwIEAwUFBAQAAAF9AQIDAAQRBRIhMUEGE1FhByJxFDKBkaEII0KxwRVS0fAkM2JyggkKFhcYGRolJicoKSo0NTY3ODk6Q0RFRkdISUpTVFVWV1hZWmNkZWZnaGlqc3R1dnd4eXqDhIWGh4iJipKTlJWWl5iZmqKjpKWmp6ipqrKztLW2t7i5usLDxMXGx8jJytLT1NXW19jZ2uHi4+Tl5ufo6erx8vP09fb3+Pn6/8QAHwEAAwEBAQEBAQEBAQAAAAAAAAECAwQFBgcICQoL/8QAtREAAgECBAQDBAcFBAQAAQJ3AAECAxEEBSExBhJBUQdhcRMiMoEIFEKRobHBCSMzUvAVYnLRChYkNOEl8RcYGRomJygpKjU2Nzg5OkNERUZHSElKU1RVVldYWVpjZGVmZ2hpanN0dXZ3eHl6goOEhYaHiImKkpOUlZaXmJmaoqOkpaanqKmqsrO0tba3uLm6wsPExcbHyMnK0tPU1dbX2Nna4uPk5ebn6Onq8vP09fb3+Pn6/9oADAMBAAIRAxEAPwD9U6iHIz2PSpa+FPh5+3P4vXQLfRLrwZN4o8TwZX7Uspi81B0Z4wpO71I69aOVvYZ9TeEvjBp3iXxvq/hC7sbvQ/Eun5k+xXoGLmDPE0TDhlPX2rfHxB8NHxV/wjP9uWX/AAkGzzP7O84ebj6evt1r4J8bw/HH49/GTQLuHw5N4PvYLRkt7+0WS3SKIklt8x5J5Ix79K9++HfwC8F/ABIfFfjTWre51tHLLfXbfKjnrtJyzn3puNt2Fz6XLDB5qEDJqG0u4dQtYbu2lSe3nQSRyxnKupGQQe4ql4k12Lwzod3qk0M1xDaxmV0t03ybR1IHes0wkzwv4sftWjwrqF9oXh/Q7ifWLeRoZLnUV8qCNgcZA6uPyFcz4U+CHjH4yS2viHx1rb/ZZ8PFFuzhT02IPlUfrXoHxb+J3g2b4cSam2kSa7HrlrNZRT2tspeN9n3ZHPKEE8A+leX/ALFHxn1/X9CuvDN1p4uNM0e2kf8AtAOd8DjJCMOhUkHHQ59a6lJct0tTJ3D9ky0+y/HX4jQabPLLo0DywKZW5YJLtQkevBr66yfevmn9irw7LYWHi3VrpP8ASLy7A3nknJLn+dfS1ZVd7lR+EPxpdxGAaSub8f8AxB0n4baH/aesySLAz+XGsSFmd8ZC/pWS1dhs8Z/aH8c6nonxf+Hmn6DeyxXysz3EUbnZIjuq7XToQQG6/hX0YSuePyr4P8PfF20vvjFfeNNc0u81SXJNnb2+NsZHEY56AD26mvoCx+P+t6jCbxPBdw1oBuOJWL7cdvlxmt5QeiEj2xz8xpR0rmPAfjzSviR4ag1rSJS1u5KPG4w8Ug+8jD1/nXSx/cFYlD6QnijIqOUgd6QFPUIRdQzQt92RCh+hGK+M9S099O1O8spBiS3leI49mI/pX2fI2MY7mvlz40acukeP9QZV2xXCpOvplhz+oNedjYpwudFGWtjimkEC8msPU7rduOfwq1eXfmDAPANczq18IwTnk18xVV9D1IuxznijURHBIue2K8S15Z9U1GO2t0aWad/LjjUZLE9q9B8W6pjcoYnnA967f9nj4Zm5uG8W6lGGwSLCJx0PQyf4V34Wny6MwqS2R3Hwc+F1v8PvDEUDqp1KcCS7lPJ3f3QfQdK9MsbZQeuOOhquYsDIGKtxZBDd675xbRzp2PPv2m9C/tj4PX8yKWm0+4huk9hu2N+j/oa+GdT2fa5B5iuwwp2nPIGDiv01aKG9tJLe4hjubeVSkkMyhkdT1BB61Ts/BHhe0x5HhvSIiPu7bGPj9KKWI9gnGxU4qep+ZTDfwBk1JBZT3BxFbSyk9kjJ/kK/UmDTNOgX5NPsk/3LaMf0q9C0NttMcUUbA5GyJF/kKKmPmleEdRRox7n5cw+EtbuiBDo2oSE9Atq5/pWlF8HvG12qtF4S1mUN0P2KTH8q/UZfE93F0kAx9Ke/jO5Vfnw/HTca8qeZZgvgop/P/gGvsKfVn5dyfAzx9GM/8IjqoH+1blf54rNu/hX4ssH23OjT2x9JcD+tfo/448bF4HzGh47tmvmD4leKnkkk2RopGeeTU08zzOTUZUor5g8PR/mPnWTwLq8K5lhiTt80oqFvCF4B80sC+245/lXSXus3kzsx2bc8ACsq4v7iT+MD8K9WGJxct0kYulSXUym8LyL9+5jH0BNRNocUf37w49Fj/wDr1amaVufNNUZYC4OXY/jXTGeIe8kZONK9hrWVlFktcynHog/xqpLLaR8L57/TaKV7QgjjI96GiwuMAV1KcurIlBJ6Fdp4RyIpvxcD+lRm8QdLcsPeU/4VI0DNUZsiRzkDPpWvOyeVgL7AyLdPxJNB1BwObeED6H/GphpM0xDR/MucNjsPWtKLwXqV9EGgglkTnDpE0iEfVQSPyo5ydDG/tWVV+VIl9xGKaNWuSMB1B9RGo/pVq+8L6hYITNFjHVT976461nGyuBgeU+Tzt2nNLURt6BdyXEjrLLvCjOeK6K3fjINcRoRZ7yJ1Jj8tiHBH3s9q7e2UyL/hWjdgOl0oK9nKGHPBFRa5Ev8Ao7YGM81Z0aPFq+R2BpuuR7rWJscBqSdmB5H4rgEOszlPkzzzWHuPc5rp/iDFtvoXH/LSPb+VcrggAe1akDyyOM45pplMh2gflTUdUPQnNW0ljRckfpQBCQ5GNhpht5D/AA1M9+x+6tQtcXDdBQA4RyDjbSFZB/DThPLjnFKbiQelAEO5weeKXzB3qdgGXJHPeqskZJoAUuOab5opREcUvk+1ABuBX3puAalS23Y6Cpks8/8A1qAKW0KcU+J3SQBeM1eS1QHkZI71PDZBn3dMUFmppUfkW+W6k1sQZIz2rMgvYraINIOnrVmDUY70/umAHpWLWoGstyAuDUouBjgkfjVLAXAyDTWuljYqagD98K8U8a/DKTSPifoPxE0B7HTprdvs+sJdMIY5rQjBYNwAwHPPXFe118IftDfsy+Lj4gj1F9Z8QeNvCLyl57f7Y0l1aJnJURk7XAHQgfWulb2A9K+LP7a+iaJcSaJ4AhXxnr7kxiaEk2kLeu4f6wj0Xj3ryqy0/UovH/hvW/jVqN5LJrjMtpax4PkKCODHn93HyBkZNcxB4k8F/s+/FDwbrfha31BdHu4GtdUg1m2DSROGB8xMdDtJ4H92u18DWGoftWfHa58azwSw+CNKcW1q0mQZI1OVVfdup+tbJcqA+1bS1t7GxgtbKNIbSJAsSR/dC44xTnkAj5AIIwQRkGuV8TfE3wx4HRYtT1OKCTgR20fzzN6AIP64FW/B3jPTfHuhJq+l+cLV3aIpcRGORGU4IIP8+hrC1ijiPFPw6vvCWi6ldfDyws2uLy8+2XmkX2ZLe4OOditwh74GM184/Au9vfh1+034ij8cJF4Xh1y0uLmS2lIt7Zg3zDC5xt4YD3zX0B8Vvix418ManNpHh3wTLezYDQ6nM+6Flx94Kvp6Eivh34qal4i+JniE65r139uvoyII2ljVI4gG4RVHAGc11U4uaM27H1fpfxo0qxlbwd8GdDfUZJJmZr+bc9uhPUqGOWH1wK+itKOoJpVoNUaF9S8tftBtwRGXxztB7V8w/DH4m6t8ENGttN8SfC6XSbORFJ1fRj5vncfebPX/AL6r6I8H+PdC+IWnfbNDv0u41+/GRtliPoyHkVlONtiE7HQGX5SM1j+KfD+m+M9CudL1WJLixmXDBhyp7Mp7EetargOCPUYNeD+Jv2VbPWdTnnsfFerafbzOX+y+azKuTkhTuHH1rFLXU0TOT8GeI9D+A/xIvvBPihLR9PuQLrTdeeJXwGONjsM46Y5HB+ter6r+0X8OtBlEVx4otWkUZMVpG8hx9FWvm22+BNpP8S00zSrnU5Y7eQQ3b3UBiYEH5iM5yvv3r1PWPhx4U+E17da94l0+48R6LORHHdPbK/2IjoJACCQeBux9a3lZ2uxnnv7P3xu03wLqXinTnsb69tL/AFB7mxECjAQu33geQcEV9T+AvH//AAnFhdy/2Re6U0Enl4usFZARkMjDgj+VfP3wI8Q+BfB194gvb3WNLia8lVreNiHZFyTtUYJGOK948H/FDwz411C5sNE1NLu6tRmWMIUIHtkc/hWclrogOuBPqaRuecmgmpFxs5rMCu/NeF/tM6aVtdM1FByA0TH15yP5mveGXk1wHxt0ZdX+H2oEKDJbgSqPzB/nWFeHPTcS4OzPj24uSkTHpmuR8QXuyIhW45zW9qsu1Mk4OOlcXrIlv3jtbdWlnnYIkajJYnoK8BUm+h3SeiKXhDwfc/EXxXFZAOLKM+bcyjgLHnpn1PQV9U2VnDp9pFbW0Sw28KhI416Ko4ArG+HvgKPwH4eisiFe+lxJdzD+J/QH0HT866LbtFejCmoGEnfQbx6Yp0fWignBHvWtr6CitS3E2B161ZjY881QjYriratXJOmaE+5vWnRuQTzUG6gPgHis/ZjW5LLL15qncTERNzSzSnniqV2WaFsHmmqepo9jz7xndsBIAa8C8YiWeZgoNfQet6JJeyMOtcjefDwXEwZ14qnC7Mz5ul0m4ZiAmfqKqSaFcu+PKx719NN8NLfb9wflQnw3tV52LW6g0J6ny4/hy4d9oTB+lI3hO7APy8fSvqb/AIV1aZ+6v5Uv/CvLRedin8K0SZnynyr/AMIjeP8AwnFK3gm8dSNp59q+pz4EslP+rFH/AAhtmp/1Yx71vHYR8sx+ALtsDafyq3H8O7skZU/lX1AnhSyUfcWpf+EcsxGcRpVAfPvhb4frbXqSXEU0bk7TNCwDfkeD+le++CfhtpGoPcyIsNqI4fNe98trUyDvH+6kGT+HXvUi6Jarj92Mewq9bWKxH5QxHpuK007O5Eo3OP8AixfWXi028LaTqcC26pGkaKArBRgZHmHJx3JNeS634VvLzTmsbHSZSnbzpVQZ96+iZdPTYCICeemN1R/2YWBAtmOe4jqnJSIULnyro3wW1RbgPeOkcQOTDb88n3rurb4YmIbViYj3Fe2x6LIrAC2kz7R1K1qY3wYmDf3WXBFJSSRXIjyGDwDJBFJ+7wAtcd4nsvsto0Z4KtX0c8CFSpj2kjqRXinxMsAhnGMEAHimtzOSsfPXj5sajAD2jNc95W5gR/drb8dk/wBpx+girLth+6B6k8V0EFmw0WO9yz3CQY7E0zUbOG2OyOVZSO/ajYSNuRmmNBKvJAx7UAVdo9BRtHpU2w0m2gCqUO40bDU7AZ6U3aPSgCLYaNhqXaPSjaPSgBoUgClANSBRjpQABQAIvSpUXpSKOAamRc0AOjAA9aevWk6Uo60ALJGJoyprPw2nyblzj2rTEZYcVBOgZSpXPvUlluwv/tcW7kkHFW43MhbtXNFZbCQNHwO/vWraXgkjyAQe4NSyWf0JVz2ravY6DYTX2o3kNhaRKWknncKqjvya6GvMPi58IdF+MegR6XrElzAkL+bFJbSFSrYxyOhGPWravuaI+Nv2s/2hfC/xNsW8O6BaRmytpRcy6qbQGW4dPurH0Koe7Hk+mKh+Dfj74q/E3wdbeDvAUVpomj6cAlxqFjFslYtzukkbgHtkDJxX074B/ZI+HngFo5hprazdJz52oHcv/fHSvOPBGn/8KK/av1bw7bRfZvDfiuP7TawoMRIzHIAHQBXDj6NW0ZRceVLUR13wz/ZS0/w+V1DxNqc2vam/zSjcSjH/AGmblq94trOCwto4LWFIII12pFGMKo9qcVK8HrQDg1m227so4n43eIz4X+FPiK+jcpObVoIiOu5/lGPfmvLPh58HrfxD+znNZzWaf2jqcTXMMrKPMDIcx4PYHH617H8RvANt8SPDn9k3V1LaJ5yTb4gDuKn7rA9Qa6DTdPi0jT7Wytxthto1iQewGKE1FaGT0OW+FF8+r/DnR/tkT+YkPkSRTL1CHbyD7AVPB8L/AA7p3iSDxFp1q2l6jHncLNvLilBGCGToRXUhQOgAprE5xUPV3JQhYnqagdgGIORnuO1TVh+K/FujeC9NbUNc1K30qx3iPz7ltq7j0H1pFNnmeo3/AIv8O395oOp6jcTjVJjHpWvQ2wka3J5VZQB93sT2615X43+FXi+z1LT5PGXiS51TQ7iQx3E0crMsPPB2cDp/KvaT+0Z8MfKLv440gBSRtMxLfljNcn4s/a3+EkNnPYz6jL4gglQo9vaWTyJID1GTgU02thXPN/G/g7wz8LfFWkHSbaLW7IWrS3VrM3EjH7jArjGRgivSv2X/AIc3OgrqHiS+t/s732VgjIIYAnLHnt2FeJaj8YbLxR4n0+68GfDTW9RFhClvaWt7cn7KqqflHlqrHjOeWr0FX/aT+I23LWPgmwbgJBGsbhfq25uPwre90VdH1Lf6laaXbNcX9zDYwL1luZBGv5mvNte/ad+G/h2c27eI49SnU4EOmI05J9Mjj9a840n9jifW50vPHfjfUfEE2cmFGYr9MsT+gr2HwX8DvA3gZEbSvDtobhf+Xm5USv8Am3T8KydkFzX8E+NF8eaQNUg0nUdLspP9SdSiEbzD+8FyTj61p6/ZDVdHvbQgETQOnPqRxWiDn8OAB0FMkUEHP+RUMaep+dXiu2k03U9Rgn6Rysq/TrXWfBbwKQ58T6jFliCllE69PWT+g/GvSvFfwRTXfHms3F/KbfSInDgJ96Zjzj2GO9bC2iII1jVY441CJGvAVRwBXm8lnc6HPQrNnPOfyqGSEv0Un8K2FuHhXClQPdAaa+o3Cj5ZQv0QVrHczvcxfsj9o2/75NOj0+5Y5WItj/ZNav8Aat92nP8A3yP8KVdc1KE5W7kQ/wCyo/wrW9tRXsZ8el3THHkP+AqzFo94R8trM30WrDeIdUxj7bN+GP8ACmjWdRPW9uP+/hrFpMal1CPQNQlPy2k3/fJqePwzqRPFnKfqKZHqt+3W8nI9DIaPttz3uJW/7aGs3ZOxd2xW8K6o4wLRvxqCTwdqL5Uxqp7gsKSWZz1kdj7saoXGW53HP1NCtcSuTyeBLs/eeFPrIP8AGoz4AbHz3luv/bVf8azZY2J4JzULW0nbmtbrsNtmm3gW1Q/vdWtU9vMBpreDtJQ7W1m3Hvmso2snPy1G9pJ/d/Sh26CRqSeF9DjyH1mFvoD/AIVCuheHVfa2o7/91GrP+wuR0o/s58ZHWkPUuy6Z4Xi6zzP9IzSeX4XRMGO4cf7grNksZM9TxTvsLEc/yp7BsWzc+GY/u2E7/XaKbJqehKp26Q5/4Go/pVUabvJ5/SkOlDof5VftB8xM2u6ao+TR0/Fx/hUMniK3Qkx6Tbqo7sSTmmnSVHpTf7KX0BqXNAMk8Uvt+WwtV/4CagHii7X7sFsn0i/+vVltMTsnFA05AMbam4rkVr4k1JmJ3QqO2IVpZr6eclpCCx6sY1/wqQWKr91QDR9hZvT86kLdjG1KFmgJJH1CivEfimgvbWRhEFmQH5x/EvuK941G2Itjx0rxH4hRfuplbjKNWsXZoiZ8oeN2B1dwOg 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评论
我的天呀,这有点吓人,这机器还要修三天?看错了吧,是真事吗?照这样下去,估计饭都吃不上吧!更别谈什么房租,人工工资之类的了,,,,,,
这句“不过,老板的脸色似乎有点青,,,看我的眼神也越来越犀利了。。。。。”,不是有点青,是快被气死过去了吧,,,,,
评论
现在电脑行业越来越不行了
评论
我觉得你修电脑太屈才了,应该改行当作家写散文更有前途!
评论
第一个帖子 重复了 清帮忙删掉 谢谢版主
评论
BOIS第八脚是供电脚位,30欧确实偏低,怎么确定是PCH坏了的
评论
思路清晰,柳暗花明,不错来自安卓APP客户端
评论
这个机器时间修长了 还真的不划算
评论
技术不错文笔也好,再接再厉;
评论
修这种机得有耐心,很花时间
登录/注册后看高清大图来自安卓APP客户端
评论
666这波不亏.赚了就是赚了来自苹果APP客户端
评论
修了三天,维修费怎么收!来自苹果APP客户端
评论
问题有点多啊 又是无时钟 EC又坏了 桥也坏了。。。。。
评论
这个机子,桥供电和bios是同一路供电吧
来自苹果APP客户端
评论
码肯定没有 因为全是转圈
评论
你老板 想开了你 哈哈
评论
客户喜欢,老板就呵呵呵呵了
评论
收藏
评论
维修还是要扎实的功底,以及细心啊
评论
坚持就是胜利来自安卓APP客户端 电路 电子 维修 我现在把定影部分拆出来了。想换下滚,因为卡纸。但是我发现灯管挡住了。拆不了。不会拆。论坛里的高手拆解过吗? 评论 认真看,认真瞧。果然有收 电路 电子 维修 求创维42c08RD电路图 评论 电视的图纸很少见 评论 电视的图纸很少见 评论 创维的图纸你要说 版号,不然无能为力 评论 板号5800-p42ALM-0050 168P-P42CLM-01
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