跳转到主内容

型号:A1419/ 2012/2.9 & 3.2 GHz Core i5 or 3.4 GHz Core i7 专业版

328 个问题 查看全部

iMac 27" EMC 2546 changing a component on the logic board

Hi

A have a big problem with my imac, I have to change an electrical component but I don't know the reference ? If somebody know or have an electric laptop schema please ?

Block Image

[[URL=http://www.hostingpics.net/viewer.php?id...][IMG][/URL]]

[[URL=http://www.hostingpics.net/viewer.php?id...][IMG][/URL]]

Thanks

回答此问题 我也有这个问题

这是一个好问题吗?

得分 1
4条评论

@feya what is the 820-XXXX number on your board?

完成的

Hello oldturkey03

I have only found this reference CJ3B 31PlQMB0070

thx

完成的

And this reference C023113003FF651AK

完成的

Feya, I have this exact same problem!! This has to be a design defect. Same resistor blew out on my board and my screen won't come up. Did you find out what the value of the resistor is? Thanks in advance!

完成的

添加一条评论

1个答案

最有帮助的答案

@feya old question and only answered for completions sake. That is reference designator L9500 which is a 250 Ohm ferrite bead (fixed inductor)in a 0603 package.

You will need to check why it blew the way it did. There should only be 12 Volt on that rail, so make sure you have no short anywhere else.

Block Image

这个答案有帮助吗?

得分 1
添加一条评论

添加你的答案

FEYA 将永远感激不已
浏览统计数据:

过去 24 小时: 0

过去 7 天: 0

过去 30 天: 0

总计 181