メインコンテンツにスキップ

2012年6月12日に発売。Turbo Boost付きのインテルプロセッサー、モデル番号は A1278。

1528回答 すべてを表示

3 beeps and/or pressure applied to case causes lines or power shutoff.

Sometimes the computer will simply give me 3 beeps and not turn on. Other times it will boot up normally, but if I apply pressure to the case to the left of the trackpad or lift and move the computer around with any kind of velocity it will display lines like this and either go back to normal after releasing pressure or shut off:

Block Image

I have tried every kind of RAM configuration and with different verified RAM sticks, and have determined it is not (at least simply) a RAM issue. Also, the battery is not bloated and only has 230 cycles

When the computer is booted up and left undisturbed, it functions normally.

Any wisdom you guys might share would be much appreciated!

この質問に回答する 同じ問題があります

この質問は役に立ちましたか?

スコア 0

コメント:

See if it is doing the same thing with an external monitor.

さんによる

コメントを追加

1 件の回答

最も参考になった回答

Hello.

It looks like you are facing with the cold soldering issue on the legs of the memory socket.

Re-soldering the legs will solve the problem.

このアンサーは役に立ちましたか?

スコア 3

コメント:

How do you do that?

さんによる

@mayer, I think they mean to reflow the pins of the memory socket with hot air.

さんによる

As soon as i can, i'll upload pictures of that. All you need is a microscope, a fine soldering tip, the flux and solder.

You have to remove the tapes covering the legs to get better view.

We face with this problem at least once a month.

さんによる

You can't reflow that, the hot air will melt the plastic.

With hand, one-by-one.

さんによる

I will be very interested to see the photos. I've not done a repair like this and have minimal soldering experience... Thanks @chiio

さんによる

2件以上のコメントを表示

コメントを追加

回答を追加する

goodcyning さん、ありがとうございました!
統計データを表示:

過去 24時間: 0

過去 7 日: 0

過去 30 日: 0

今までの合計 98