Black screen, ring, no image on the screen, burning smell

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iMac Intel 21.5" EMC 2544

모델 A1418 / Late 2012 / 2.7 & 2.9 GHz Core i5 또는 3.1 GHz Core i7 프로세서

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Efim Armand @earmand

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게시일: 2020년 12월 12일

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Black screen, ring, no image on the screen, burning smell

Hi, I am trying to fix my iMac which stopped working. I opened it, when I press Power button all 4 green lights turn on, and one of the parts starts burning:

https://youtu.be/QY-B5TLIU9E

Is it something that can be fixed?

Thanks!

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Dan @danj 평판: 479.4k Self employed contract worker 35 329 971 · Answer 1 · 2020-12-12T16:41:31-07:00

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Dan @danj

평판: 479.4k

Self employed contract worker

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329

971

게시일: 2020년 12월 12일

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You have a short within the logic board! The sparks are around a Via which is a connection between different layers.

At this point you’ll need to find someone with deep skills to fix this or just replace the logic board iMac Intel 21.5" EMC 2544 Logic Board Replacement

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Thanks, I will probably do that.

Efim Armand 의 2020년 12월 12일

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oldturkey03 @oldturkey03 평판: 782.4k 1.1k 893 2.3k · Answer 2 · 2020-12-12T21:42:12-07:00

oldturkey03 @oldturkey03

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@earmand all of those connections and points are part of your backlight circuitry. The component right next to it is C9712.

Disconnect your LCD and check to see if that makes a difference. You also want to consider posting some really good pictures of your logic board with your question. Maybe we can find something obvious. 기존 질문에 이미지 추가하기

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iMac Intel 21.5" EMC 2544

Black screen, ring, no image on the screen, burning smell

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