iMac won't start. Late 2012 27" 3.4 i7

Question 1

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crwdns2934197:0crwdne2934197:0 iMac Intel 27" EMC 2546 crwdns2933315:00crwdne2933315:0

George Tedrick 13

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Mha 11, 2026

asked Mha 11, 2026 crwdns2933505:0crwdne2933505:0 George Tedrick

Question 2

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Are there multiple iterations of the 2011 iMac 27in?

crwdns2934197:0crwdne2934197:0 iMac Intel 27" EMC 2429 crwdns2933315:00crwdne2933315:0

Rowan Maddox

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Kho 5, 2026

edited by author Kho 5, 2026 crwdns2933505:0crwdne2933505:0 Rowan Maddox

Question 3

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Help identify the pinout of the PSU (A1419, EMC 2546)?

crwdns2934197:0crwdne2934197:0 iMac Intel 27" EMC 2546 crwdns2933315:00crwdne2933315:0

Duck 6,2crwdns2936485:0crwdne2936485:0

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Kul 26, 2026

commented Kul 26, 2026 crwdns2933505:0crwdne2933505:0 Duck

Question 4

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mini display port replace iMac 27 mid2010

crwdns2934197:0crwdne2934197:0 iMac Intel 27" EMC 2390 crwdns2933315:00crwdne2933315:0

dinoo_fixit 1,8crwdns2936485:0crwdne2936485:0

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N'w 31, 2025

commented N'w 31, 2025 crwdns2933505:0crwdne2933505:0 dinoo_fixit

Question 5

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Gpu and cpu upgrade

crwdns2934197:0crwdne2934197:0 iMac Intel 27" EMC 2309 & 2374 crwdns2933315:00crwdne2933315:0

The Zeta

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Maw 22, 2025

edited by author Maw 22, 2025 crwdns2933505:0crwdne2933505:0 The Zeta

Question 6

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

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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) 1crwdns2936485:0crwdne2936485:0

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Maw 7, 2025

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

Question 7

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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 8

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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 9

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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

DanJ 502,1crwdns2936485:0crwdne2936485:0

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Kho 19, 2025

crwdns2955688:0crwdne2955688:0 Kho 19, 2025 crwdns2933505:0crwdne2933505:0 DanJ

Question 10

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Built in microphone to USB

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

bigbaba

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Kul 22, 2025

asked Kul 22, 2025 crwdns2933505:0crwdne2933505:0 bigbaba

Question 11

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How do I take the AC inlet port out?

crwdns2934197:0crwdne2934197:0 iMac Intel 27" EMC 2546 crwdns2933315:00crwdne2933315:0

Din0saur

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Yan 23, 2025

asked Yan 23, 2025 crwdns2933505:0crwdne2933505:0 Din0saur

Question 12

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No Display but a little light on boot after replacing ssd.

crwdns2934197:0crwdne2934197:0 iMac Intel 27" EMC 2546 crwdns2933315:00crwdne2933315:0

DanJ 502,1crwdns2936485:0crwdne2936485:0

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Yan 19, 2025

commented Yan 19, 2025 crwdns2933505:0crwdne2933505:0 DanJ

Question 13

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Reuse the camera and microphone of an A1419 (EMC 2546)

crwdns2934197:0crwdne2934197:0 iMac Intel 27" EMC 2546 crwdns2933315:00crwdne2933315:0

oldturkey03 859,1crwdns2936485:0crwdne2936485:0

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Nhl 21, 2024

crwdns2955688:0crwdne2955688:0 Nhl 21, 2024 crwdns2933505:0crwdne2933505:0 oldturkey03

Question 14

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Totally confused about iMac Monitor cable Installation.

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

Helpful Harry 1,7crwdns2936485:0crwdne2936485:0

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Mha 19, 2024

commented Mha 19, 2024 crwdns2933505:0crwdne2933505:0 Helpful Harry

Question 15

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

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Boot loop after CPU upgrade

crwdns2934197:0crwdne2934197:0 iMac Intel 27" Retina 5K Display (Mid 2017) crwdns2933315:00crwdne2933315:0

mattmay

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Kho 24, 2024

asked Kho 24, 2024 crwdns2933505:0crwdne2933505:0 mattmay

Question 16

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iMac Pro Doesn't Power On

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

Olivier Paulart 13

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Dzi 14, 2024

commented Dzi 14, 2024 crwdns2933505:0crwdne2933505:0 Olivier Paulart

Question 17

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iMac 27 late 2015 wont turn on after nvme and cpu upgrade

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

Vincenzo

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Yan 3, 2024

commented Yan 3, 2024 crwdns2933505:0crwdne2933505:0 Vincenzo

Question 18

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iMac a2115 does not turn on after not responding in sleep mode

crwdns2934197:0crwdne2934197:0 iMac Intel 27" Retina 5K Display 2019 crwdns2933315:00crwdne2933315:0

Alex Maluco Beleca!

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N'w 3, 2023

edited by author N'w 3, 2023 crwdns2933505:0crwdne2933505:0 Alex Maluco Beleca!

Question 19

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Can I use a A1862 screen assembly on a A1814 EMC 3070

crwdns2934197:0crwdne2934197:0 iMac Intel 27" Retina 5K Display (Mid 2017) crwdns2933315:00crwdne2933315:0

David

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Huk 16, 2023

asked Huk 16, 2023 crwdns2933505:0crwdne2933505:0 David

Question 20

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cpu stuck at 1.20ghz

crwdns2934197:0crwdne2934197:0 iMac Intel 27" EMC 2309 & 2374 crwdns2933315:00crwdne2933315:0

9epik

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Huk 15, 2023

edited by author Huk 15, 2023 crwdns2933505:0crwdne2933505:0 9epik

crwdns2944620:0iMac Intel 27"crwdne2944620:0

iMac Intel 27" crwdns2944632:0crwdne2944632:0