CPU Upgrade Issue - No power

Question 1

iMac Intel 27" Retina 5K Display (Mid 2017)

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crwdns2934195:0crwdne2934195:0 iMac Intel 27" Retina 5K Display (Mid 2017) crwdns2933315:05crwdne2933315:0

Timur Kazmin

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masiku 2 agoMaw 12, 2025

answered masiku 2 agoMaw 12, 2025 crwdns2933505:0crwdne2933505:0 Timur Kazmin

Question 2

iMac Intel 27" Retina 5K Display (Late 2014 & 2015)

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How to fix iMac bootlooping?

iMac Intel 27" Retina 5K Display (Late 2014 & 2015) crwdns2933313:01crwdne2933313:0

Dan 492crwdns2936485:0crwdne2936485:0

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masiku 4 agoMaw 10, 2025

answered masiku 4 agoMaw 10, 2025 crwdns2933505:0crwdne2933505:0 Dan

Question 3

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Can I use late 2014 27” iMac ram in a late 2015 27” iMac?

crwdns2934197:0crwdne2934197:0 iMac Intel 27" Retina 5K Display (Late 2014 & 2015) crwdns2933315:00crwdne2933315:0

Milo (TechsMex) 999

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Maw 7, 2025

asked Maw 7, 2025 crwdns2933505:0crwdne2933505:0 Milo (TechsMex)

Question 4

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Display not powering up after SSD swap

crwdns2934197:0crwdne2934197:0 iMac Intel 27" crwdns2933315:00crwdne2933315:0

djmarksun

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Maw 7, 2025

commented Maw 7, 2025 crwdns2933505:0crwdne2933505:0 djmarksun

Question 5

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After long storage: Fans running, but NO startup chime or display.

crwdns2934195:0crwdne2934195:0 iMac Intel 27" Retina 5K Display (Late 2014 & 2015) crwdns2933315:04crwdne2933315:0

oldturkey03 821,6crwdns2936485:0crwdne2936485:0

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Maw 4, 2025

answer accepted Maw 4, 2025 crwdns2933505:0crwdne2933505:0 oldturkey03

Question 6

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iMac Pro Memory Maxxer RAM Upgrade Kit

crwdns2934197:0crwdne2934197:0 iMac Pro crwdns2933315:00crwdne2933315:0

Denis Andreev

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Kho 30, 2025

asked Kho 30, 2025 crwdns2933505:0crwdne2933505:0 Denis Andreev

Question 7

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Wrong RAM purchased from ifixit?

crwdns2934195:0crwdne2934195:0 iMac Intel 27" Retina 5K Display 2019 crwdns2933313:01crwdne2933313:0

Dan 492crwdns2936485:0crwdne2936485:0

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Kho 29, 2025

answer edited Kho 29, 2025 crwdns2933505:0crwdne2933505:0 Dan

Question 8

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iMac not booting, reboots after login

iMac Intel 27" EMC 2546 crwdns2933313:01crwdne2933313:0

Paul L

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Kho 28, 2025

commented Kho 28, 2025 crwdns2933505:0crwdne2933505:0 Paul L

Question 9

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Only LED #2 is lit?

iMac Intel 27" Retina 5K Display 2019 crwdns2933315:03crwdne2933315:0

Jorge Sinval 11

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Kho 27, 2025

commented Kho 27, 2025 crwdns2933505:0crwdne2933505:0 Jorge Sinval

Question 10

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iMac 27" 2010 Chime loop and black screen issue

iMac Intel 27" EMC 2390 crwdns2933315:06crwdne2933315:0

Kim Buendia Salvador

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Kho 26, 2025

commented Kho 26, 2025 crwdns2933505:0crwdne2933505:0 Kim Buendia Salvador

Question 11

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How to remove the power socket from the back case?

iMac Intel 27" Retina 5K Display (Late 2014 & 2015) crwdns2933313:01crwdne2933313:0

Dan 492crwdns2936485:0crwdne2936485:0

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Kho 24, 2025

answer edited Kho 24, 2025 crwdns2933505:0crwdne2933505:0 Dan

Question 12

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HDD Upgrade/Replacement with SSD?

crwdns2934195:0crwdne2934195:0 iMac Intel 27" Retina 5K Display (Late 2014 & 2015) crwdns2933315:08crwdne2933315:0

Steven Kudelko

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Kho 20, 2025

answered Kho 20, 2025 crwdns2933505:0crwdne2933505:0 Steven Kudelko

Question 13

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iMac 27" A2115 (2019) Power Supply & Storage Upgrade Advice?

crwdns2934195:0crwdne2934195:0 iMac Intel 27" Retina 5K Display 2019 crwdns2933313:01crwdne2933313:0

Jorge Sinval 11

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Kho 19, 2025

commented Kho 19, 2025 crwdns2933505:0crwdne2933505:0 Jorge Sinval

Question 14

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A1419 Late 2015 iMac 27" GPU VRAM module thermal pad thickness?

crwdns2934197:0crwdne2934197:0 iMac Intel 27" Retina 5K Display (Late 2014 & 2015) crwdns2933315:00crwdne2933315:0

Dan 492crwdns2936485:0crwdne2936485:0

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Kho 19, 2025

crwdns2931431:0crwdne2931431:0 Kho 19, 2025 crwdns2933505:0crwdne2933505:0 Dan

Question 15

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iMac stuck on white screen with apple logo on boot

crwdns2934195:0crwdne2934195:0 iMac Intel 27" EMC 2429 crwdns2933313:01crwdne2933313:0

Emily H 21

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Kho 15, 2025

answer accepted Kho 15, 2025 crwdns2933505:0crwdne2933505:0 Emily H

Question 16

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iMac doesn't produce video signal after a system upgrade

crwdns2934195:0crwdne2934195:0 iMac Intel 27" EMC 2429 crwdns2933313:01crwdne2933313:0

Emily H 21

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Kho 11, 2025

commented Kho 11, 2025 crwdns2933505:0crwdne2933505:0 Emily H

Question 17

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Any good links how to extract data from a Fusion Drive?

iMac Intel 27" Retina 5K Display (Late 2014 & 2015) crwdns2933313:01crwdne2933313:0

Owen Cunneely 7,1crwdns2936485:0crwdne2936485:0

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Kho 6, 2025

answered Kho 6, 2025 crwdns2933505:0crwdne2933505:0 Owen Cunneely

Question 18

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3rd LED Flashes Briefly Then Shuts Off, Need Help Diagnosing.

iMac Intel 27" Retina 5K Display (Mid 2017) crwdns2933313:01crwdne2933313:0

Owen Cunneely 7,1crwdns2936485:0crwdne2936485:0

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Kho 6, 2025

answered Kho 6, 2025 crwdns2933505:0crwdne2933505:0 Owen Cunneely

Question 19

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Thick black stripe on iMac screen after attempting HDD to SSD swap

crwdns2934195:0crwdne2934195:0 iMac Intel 27" EMC 2639 crwdns2933315:06crwdne2933315:0

Dan 492crwdns2936485:0crwdne2936485:0

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Kho 6, 2025

answer edited Kho 6, 2025 crwdns2933505:0crwdne2933505:0 Dan

Question 20

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Maximum Hard drive space

iMac Intel 27" Retina 5K Display (Late 2014 & 2015) crwdns2933313:01crwdne2933313:0

Dan 492crwdns2936485:0crwdne2936485:0

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Kho 2, 2025

commented Kho 2, 2025 crwdns2933505:0crwdne2933505:0 Dan

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iMac Intel 27" crwdns2934277:0crwdne2934277:0