iMac 21.5, Late 2009, does not power on any more

Question

iMac Intel 21.5インチ EMC 2308

モデル番号A1311 / Late 2009 / 3.06 or 3.33 GHz Core 2 Duoプロセッサ

310回答すべてを表示

Mitja Masten @mitjam

評価: 1

1

投稿日: 2018年1月28日

オプション

iMac 21.5, Late 2009, does not power on any more

Hi.

I have iMac 21.5, Late 2009. It worked just fine till last week, when I turned it off (system shut down) and disconnected the power cable before going to vacation.

After a week I wanted to power on the iMac (with power cable switched), but nothing happens.

I tried the the "trick" with resetting the SMC, and still nothing.

Checked the diagnostic leds:

Diagnostic Led #1 is ON
Diagnostic Led #2 is OFF after "Power On" button pressed
Logic Board Test Point: Pin 1 and Pin 4 has 12V
Logic Board Test Point: Pin 1 and Pin 12 has around 2,5V (always)

Does anybody know what could be suddenly wrong?

Kind regards,

Mitja

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？

はいいいえ

スコア 0

1件のコメント:

I went to the repair service.

Looks like the logic board is broken.

They tried the logic board from iMac 21.5 2010 (a year newer model). But the graphics apeared to work wired. When turning computer on the graphic appeared on screen, lets say, cca after a couple of minutes. And not right away as it should.

Does someone know if this combination should work? Or is my qraphic card (Radeon) also broken.

Regards,

Mitja

Mitja Masten さんによる2018年2月22日

コメントを追加

1 件の回答

I went to the repair service.

Looks like the logic board is broken.

They tried the logic board from iMac 21.5 2010 (a year newer model). But the graphics apeared to work wired. When turning computer on the graphic appeared on screen, lets say, cca after a couple of minutes. And not right away as it should.

Does someone know if this combination should work? Or is my qraphic card (Radeon) also broken.

Regards,

Mitja — Mitja Masten

Andrew Afonso @andrewafonso 評価: 151 4 · Answer 1 · 2018-02-22T15:07:33-07:00

Andrew Afonso @andrewafonso

評価: 151

4

投稿日: 2018年2月22日

オプション

It sounds like an issue with the connection between the power supply and the logic board, or the power button and the logic board.

Also, what happens with pin 11 when you press the power button?

If second LED is not visible when power button is pressed:

• Verify power button connection to logic board

• Verify power button functionality

• Verify cable connection between power supply and logic board

• Verify power supply

• Verify logic board

このアンサーは役に立ちましたか？

はいいいえ

スコア 0

コメントを追加

iMac Intel 21.5インチ EMC 2308

iMac 21.5, Late 2009, does not power on any more

1 件の回答

回答を追加する