iMac Intel 27" Retina 5k Display Backlight don't work

Question

iMac Intel 27インチ Retina 5K ディスプレイ

対象のモデルはA1419 / EMC 2806 / Late 2014 または Mid 2015。 3.3 または 3.5GHz Core i5 または 4.0GHz Core i7 (機種ID iMac15,1)、EMC 2834 late 2015 / 3.3 または 3.5 GHz Core i5 または 4.0 GHz Core i7 (機種ID iMac17,1)のRetina 5Kディスプレイを搭載したすべて。

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Riku @imacrr

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投稿日: 2018年12月30日

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iMac Intel 27" Retina 5k Display Backlight don't work

Hey,

can anyone help what should be done when the screen does not work?

Apparently, the display panel is broken, the backlight is not visible, but the picture comes on when it reflects with a flashlight.

Is it possible to fix this or should I change my display panel?

Info: This iMac screen stopped working suddenly, no flickering, etc ..

Thank you!

Thanks for the answer. How much could this cost?

Yes, my iMac has been opened once. Here too, this "part" has broken, but should it not have an effect? i’m right?

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The connector is the display power connector. So it the cable was forced in backwards you could have done some serious damage to the logic board.

So, the issue is how much damage is present some won't be visible as in the case of the connector. This is going to take some work to fix. Best to find someone with the deeper tools, skills and access to the needed parts.

Dan さんによる2018年12月30日

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frankduffey @frankduffey

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投稿日: 2018年12月30日

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Personally I would write to Apple and explain your situation in a polite and full manner, include the photos and express how hugely disappointed you are that a computer that cost you X amount and is Y months old is suffering such a major problem. I wouldn't get aggressive or even quote any legal jargon - just set your case out and ask them what they can do about this. I would also suggest you send this e-mail to the Steve Jobs email address (sjobs@apple.com), this circumvents the first line of Apple customer care and puts you in touch with Executive Relations who have far more authority.

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Frank you do realize Steve Job's died! Steve Job's Bio So emailing Steve won't get to him ;-}

Tim Cook is who you would send a message to, but I think you need to hold off doing that as the system is damaged so Apple is off the hook here.

Dan さんによる2018年12月30日

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The connector is the display power connector. So it the cable was forced in backwards you could have done some serious damage to the logic board.

So, the issue is how much damage is present some won't be visible as in the case of the connector. This is going to take some work to fix. Best to find someone with the deeper tools, skills and access to the needed parts. — Dan
Frank you do realize Steve Job's died! Steve Job's Bio So emailing Steve won't get to him ;-}

Tim Cook is who you would send a message to, but I think you need to hold off doing that as the system is damaged so Apple is off the hook here. — Dan

Dan @danj 評価: 479千 Self employed contract worker 35 329 970 · Answer 1 · 2018-12-30T07:46:58-07:00

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Dan @danj

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投稿日: 2018年12月30日

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More likely the backlight LED driver circuit on the logic board needs service.

Has any one opened your system before?

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jokstar @jokstar60379 評価: 1 · Answer 2 · 2019-11-15T06:02:25-07:00

jokstar @jokstar60379

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投稿日: 2019年11月15日

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A bit late now but I had the same issue. The display power socket on the logic board had a single bent pin, I tested continuity, straightened it out, and made sure the cable was properly seated and that fixed it.

Super stressful upgrade but I save over a grand from Apple prices.

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iMac Intel 27インチ Retina 5K ディスプレイ

iMac Intel 27" Retina 5k Display Backlight don't work

Update (12/30/2018)

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