My iMac wont turn on

Question

iMac Intel 21.5インチ EMC 2389

モデル番号A1311 / Mid 2010 / 3.06 & 3.2 GHz Core i3もしくは3.6 GHz Core i5プロセッサ

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leosrocha @leosrocha

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投稿日: 2016年11月2日

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My iMac wont turn on

Hi,

I have a Imac 21.5 mid 2010. After i changed the HD for SSD It does not turn on. I put back the original HD, but the problem persisted. The 3 lights at logic board turn on, coolers turn on, i can hear a click in HD. However, the imac still present a black screen. Any idea what could be?

Thanks,

Leo Rocha

Hi Scott,

My imac is core i3.

Weel, i checked all cables and all were connected. The ligths 1, 2 and 3 still turn on. I rear a little sound like a beep. But the computer does not boot. The HD gives a little snap but i think its not running.

Thanks.

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LED 4 it is not turn on.

leosrocha さんによる2016年11月3日

Tested a external display and works. I think is LCD or black light.

leosrocha さんによる2016年11月3日

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Tested a external display and works. I think is LCD or black light. — leosrocha

Scott Havard @scottydont 評価: 49.6千 57 44 200 · Answer 1 · 2016-11-02T16:52:37-07:00

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Scott Havard @scottydont

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Hey Leo!

Do you per chance know the model number of your iMac? Do you know if it has the i5 processor or the i3 processor? In any case, it likely will not matter.

The fact that things are starting to boot up but your screen is completely black makes me thing you may have a display cable that is still disconnected. This can easily happen, and is luckily an easy fix!

You will just need to pop off the display again (this isn't that easy, but you've already done it once before!), and check the connections of the display cables. Here is a guide that will help you know exactly which cables to look at: iMac Intel 21.5インチEMC 2389ハードドライブの交換

Look at steps 5,6, and 7

Let us know if this fixes it! If not we can continue to troubleshoot!

Best of luck.

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well, it is boot but it does not turn on. i tried reset smc but does not worked.

leosrocha さんによる2016年11月3日

Since this answer did not solve your issue, please un-accept the answer so people will continue to look at the question and help you get a solution.

mayer さんによる2016年11月3日

Hmm so you have checked the display cables, they are connected but you still are having no luck? Did you also check the hard drive cables? It is also worth carefully checking the display connectors to see if there are any clear physical problems. Did they potentially get damaged in the repair?

Scott Havard さんによる2017年1月20日

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iMac Intel 21.5インチ EMC 2389

My iMac wont turn on

Update (11/02/2016)

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