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Model A1419 / EMC 3070 / Mid 2017 / 3.4, 3.5 or 3.8 GHz Core i5 or 4.2 GHz Core i7 Kaby Lake Processor (ID iMac18,3) / Retina 5K display. Refer to the older iMac Intel 27" Retina 5K Display (Late 2014 & 2015) guides as the system is very similar.

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Won’t boot if lcd is connected

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So I have this Mac and it’s working kind of.

I have noticed that with the LCD connected it won’t boot at all. However with the screen disconnected and using a separate display it boots and works

is this an LCD flex issue or panel issues? Or could this be something else ?

Any advice is hugely helpful.

Ответ на этот вопрос У меня та же проблема

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How about posting some nice clear tight images of the logic board connector at a few different angles as well as the cables connector so we can see if either is damaged. Adding images to an existing question

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Well, it does look like the logic board connector got a bit of a tug as the detent tabs are bent as such the connector might not be making good contact with the cable. I would press the tabs back down with the cable in place so you don't go to far as the shell metal is very soft and can break off. I would also slide a spudger across the connector pressing the shell inwards a bit without the cable connected. Trying to add a bit more tension on to the cable. It doesn't take much to fix so don't go to far. Otherwise its time for a new connector.

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Thank you dude. I have a new connector ready to go in.

How could a bad LVDS stop it booting?

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@Marc Webb - I'm thinking there's a short somewhere, as you implied it boots up without the display present. It could be within the connector or in the display assembly its self.

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Marc Webb будет вечно благодарен.
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