No backlight during boot time.

Question

MacBook Pro 13インチ Retina Display Early 2015

2015年3月にアップデートされたAppleのMacBook Pro 13" Retina Display Early 2015 はモデル番号はA1502、第５世代のIntel Core i5と i7プロセッサーが特長でForce Touchトラックパッドを備えています。

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VanishingTacos @vanishingtacos

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投稿日: 2019年10月21日

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No backlight during boot time.

I just got the screen replaced on my Early 2015 Macbook Pro and I noticed that I do not get backlight whenever I boot the computer. I can not see the Apple logo unless I shine a light through the back of the display. I also have an encryption password that I have to enter whenever I turn my computer on and I can not see any of that unless I shine a light through the back. When in the multi-boot picker I got no backlight as well.

However, I can get backlight when I am fully in recovery mode and when I am fully logged in. The backlight works flawlessly when I am fully logged in and never flickers or anything.

I have already tried to reset the SMC and NVRAM but that does not seem to fix the issue.

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arbaman @arbaman

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投稿日: 2019年10月21日

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You’re likely having a problem with EDID of the screen you replaced. Unless you’re able to edit EDID data you’ll have to keep it as it is, no reset of sorts will fix the issue. Or you can replace the screen with a suitable one.

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yeah i heard about this as well, you can buy a programmer and do it, but the programmers are really expensive and it is not easy to do.

Vipaha さんによる2019年10月21日

You are probably right. I am going to see the tech that replaced the screen in the first place and hopefully, they won't give me a hard time about it since I already paid them a boatload of money.

VanishingTacos さんによる2019年10月22日

Sooo... I just found out that if I closed the lid whenever I am in the boot menu or something else then the Apple logo kicks on and then I get backlight..... I am more confused.

VanishingTacos さんによる2020年4月27日

I'm also having the same issue, but would like to know more about the EDID programmer and where I can find one. Can someone point me in the right direction?

Grant Love さんによる2020年5月21日

I'm facing the same issue. Apple offered Mainboard and Screen replacement for almost a new Macbook Air price.

Do you find any solution for this issue?

Gökhan さんによる2021年6月17日

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yeah i heard about this as well, you can buy a programmer and do it, but the programmers are really expensive and it is not easy to do. — Vipaha
You are probably right. I am going to see the tech that replaced the screen in the first place and hopefully, they won't give me a hard time about it since I already paid them a boatload of money. — VanishingTacos
Sooo... I just found out that if I closed the lid whenever I am in the boot menu or something else then the Apple logo kicks on and then I get backlight..... I am more confused. — VanishingTacos
I'm also having the same issue, but would like to know more about the EDID programmer and where I can find one. Can someone point me in the right direction? — Grant Love
I'm facing the same issue. Apple offered Mainboard and Screen replacement for almost a new Macbook Air price.

Do you find any solution for this issue? — Gökhan

MacBook Pro 13インチ Retina Display Early 2015

No backlight during boot time.

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