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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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Anyone identify these micro components?

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Hey peoples,

I was replacing some parts, and put the machine back together to find that it wouldn't power up.

Then I found these parts had come loose (on the part of the motherboard where the transistors and power cable enters in).

Does anyone know what they are ? (managed to resolder the brown one but the black one is crushed)

So, does anyone know how to fix? Alternate solutions I might not have thought of, or have any clue what the parts are?

As it would probably save me a bit instead of replacing the whole section of MB.

Thanks for any help!

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Can you identify its board number 820-xxxx

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The resolution is way to low to see anything

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@danj whereabouts is that typically located? There's a number near the underside of the CPU that starts off with 94v- E222034, A005012UU...... wasnt sure if thats it.

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@sad_duck - It will be faint! Its part of the copper traces look for the 820- with four digits 820-xxxx I think its on the CPU side I don't have a 2019 board to look at right now. We need that to reference the schematics and board views to ID the parts.

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the brown ones are typically capacitors and the black ones are resistors. the resistors can be tricky and you may need a certain one for that location. if you can find a donor board that would be your best bet on figuring out which one youd need! Louis rossman and northridgefix on YT would be a good place to start looking for pictures of donor boards!

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Duck will be eternally grateful.
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