修复你的物品 社区 商店

591 个问题 查看全部

更多选项

EMC 2555 logic board dead

Hello

i have this old EMC 2555 logic board from an macbook pro 13'' . I've tried to look at it to spot anything obvious, but i can't seem to find anything. it won't power on, when i plug the DC in, the magsafe flashes between a dim green and orange light and thats it. the power indicator is none responsive, even with a charge on the battery - it is completely dead.

any ideas?

i know you might say i should just buy a new board, but this is purely to see if i can get in going again

Update (01/11/2017)

mayer im pretty sure its that one, heres some pics

Block Image

https://s23.postimg.org/430fohw23/IMG_05...

Block Image

https://s24.postimg.org/sc7owkd1x/IMG_05...

已回答！ 显示答案 我也有这个问题

这是一个好问题吗？

是 否
得分 0
1条评论

@oldturkey03 it's one of two EMC 2555 2011 A1278

http://www.everymac.com/systems/apple/ma...

由完成的

添加一条评论

2个答案

筛选条件:
最有帮助的 最新 最老的
已选择的解决方案

更多选项

Try a new DC jack to eliminate this being the cause. Grab a schematic and board view for 820-2936, and measure the power rails PPBUS_G3H and PP3V42_G3H. If these are lower than it says in the schematic, or not present, you need to investigate this further. Feel U7000 (charging IC) to see if it is getting hot, this can sometimes short to ground.

Beyond this, check the board for any brown probe points (indicates cleaned liquid damaged). I assume you have plugged it in without the battery connected too?

这个答案有帮助吗？

是 否
得分 3

3条评论:

Thanks, Ill try - where do i look for the schematics?

I have checked for the liquid damage, and nothing obvious - I have also tested it without battery too.

由完成的

Google "820-2936 schematics" and grab a board view too

由完成的

Thanks man ill try

由完成的

添加一条评论

更多选项

halo dou you have board view 820-2936-b?

这个答案有帮助吗？

是 否
得分 0
添加一条评论

添加你的答案

Emil Wang 将永远感激不已
浏览统计数据:

过去 24 小时： 0

过去 7 天： 2

过去 30 天： 2

总计 1,502