Restarted and No Video Output - Only 2 Diagnostic LEDs

Question 1

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Restarted and No Video Output - Only 2 Diagnostic LEDs

crwdns2894114:0crwdne2894114:0 iMac Intel 21.5" EMC 2389 Repair crwdns2886779:00crwdne2886779:0

Dan

crwdns2893564:0crwdne2893564:0

Yan 8, 2022

crwdns2893564:0crwdne2893564:0 Yan 8, 2022 crwdns2892120:0crwdne2892120:0 Dan

Question 2

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Won't start after dissasembly - 1 LED light goes off when powered

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OscarPetré 53

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Mha 25, 2021

crwdns2893560:0crwdne2893560:0 Mha 25, 2021 crwdns2892120:0crwdne2892120:0 OscarPetré

Question 3

0 crwdns2873741:0crwdne2873741:0

What if there are no fault LEDS?

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oldturkey03 700.3crwdns2890272:0crwdne2890272:0

crwdns2893564:0crwdne2893564:0

Maw 4, 2021

crwdns2893564:0crwdne2893564:0 Maw 4, 2021 crwdns2892120:0crwdne2892120:0 oldturkey03

Question 4

0 crwdns2873741:0crwdne2873741:0

New dual drive SSD (in place of optical drive) not recognised

crwdns2894114:0crwdne2894114:0 iMac Intel 21.5" EMC 2389 Repair crwdns2886779:00crwdne2886779:0

Ivan Eastley

crwdns2893560:0crwdne2893560:0

Kul 10, 2021

crwdns2893560:0crwdne2893560:0 Kul 10, 2021 crwdns2892120:0crwdne2892120:0 Ivan Eastley

Question 5

0 crwdns2873741:0crwdne2873741:0

iMac doesnt turn on and fans loud

crwdns2894114:0crwdne2894114:0 iMac Intel 21.5" EMC 2389 Repair crwdns2886779:00crwdne2886779:0

Alberto Casado

Edited by author

Sun 19, 2021

Edited by author Sun 19, 2021 crwdns2892120:0crwdne2892120:0 Alberto Casado

Question 6

0 crwdns2873741:0crwdne2873741:0

Bootable USB or DVD OS Reinstall New HDD

crwdns2894114:0crwdne2894114:0 iMac Intel 21.5" EMC 2389 Repair crwdns2886779:00crwdne2886779:0

Michael Maxson 23

crwdns2893560:0crwdne2893560:0

N'w 9, 2020

crwdns2893560:0crwdne2893560:0 N'w 9, 2020 crwdns2892120:0crwdne2892120:0 Michael Maxson

Question 7

0 crwdns2873741:0crwdne2873741:0

Turn on power supply without logic board connected?

crwdns2894114:0crwdne2894114:0 iMac Intel 21.5" EMC 2389 Repair crwdns2886779:00crwdne2886779:0

Superdirk

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Mha 18, 2020

crwdns2893560:0crwdne2893560:0 Mha 18, 2020 crwdns2892120:0crwdne2892120:0 Superdirk

Question 8

0 crwdns2873741:0crwdne2873741:0

repurpose a psu for a project

crwdns2894114:0crwdne2894114:0 iMac Intel 21.5" EMC 2389 Repair crwdns2886779:00crwdne2886779:0

Russ Farren

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Mha 4, 2020

crwdns2893560:0crwdne2893560:0 Mha 4, 2020 crwdns2892120:0crwdne2892120:0 Russ Farren

Question 9

0 crwdns2873741:0crwdne2873741:0

No boot after replacing GPU

crwdns2894114:0crwdne2894114:0 iMac Intel 21.5" EMC 2389 Repair crwdns2886779:00crwdne2886779:0

Pieter Vanackere

crwdns2893560:0crwdne2893560:0

Maw 3, 2020

crwdns2893560:0crwdne2893560:0 Maw 3, 2020 crwdns2892120:0crwdne2892120:0 Pieter Vanackere

Question 10

0 crwdns2873741:0crwdne2873741:0

Won't start. Only first diagnostic LED.

crwdns2894114:0crwdne2894114:0 iMac Intel 21.5" EMC 2389 Repair crwdns2886779:00crwdne2886779:0

thrcharles

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Kho 7, 2020

crwdns2893564:0crwdne2893564:0 Kho 7, 2020 crwdns2892120:0crwdne2892120:0 thrcharles

Question 11

0 crwdns2873741:0crwdne2873741:0

Noisy, but not fan related noise

crwdns2894114:0crwdne2894114:0 iMac Intel 21.5" EMC 2389 Repair crwdns2886779:00crwdne2886779:0

Jonas A. 225

crwdns2893564:0crwdne2893564:0

Mud 5, 2020

crwdns2893564:0crwdne2893564:0 Mud 5, 2020 crwdns2892120:0crwdne2892120:0 Jonas A.

Question 12

0 crwdns2873741:0crwdne2873741:0

iMac black screen, and start booting after 30 minutes

crwdns2894114:0crwdne2894114:0 iMac Intel 21.5" EMC 2389 Repair crwdns2886779:00crwdne2886779:0

Dan 442.4crwdns2890272:0crwdne2890272:0

crwdns2893564:0crwdne2893564:0

Mud 5, 2020

crwdns2893564:0crwdne2893564:0 Mud 5, 2020 crwdns2892120:0crwdne2892120:0 Dan

Question 13

0 crwdns2873741:0crwdne2873741:0

No boot screens after replacing GPU

crwdns2894114:0crwdne2894114:0 iMac Intel 21.5" EMC 2389 Repair crwdns2886779:00crwdne2886779:0

Dan 442.4crwdns2890272:0crwdne2890272:0

crwdns2893564:0crwdne2893564:0

Mud 6, 2019

crwdns2893564:0crwdne2893564:0 Mud 6, 2019 crwdns2892120:0crwdne2892120:0 Dan

Question 14

0 crwdns2873741:0crwdne2873741:0

iMac issues with installation OS and running

crwdns2894114:0crwdne2894114:0 iMac Intel 21.5" EMC 2389 Repair crwdns2886779:00crwdne2886779:0

Dan 3.3crwdns2890272:0crwdne2890272:0

crwdns2893564:0crwdne2893564:0

Yan 24, 2019

crwdns2893564:0crwdne2893564:0 Yan 24, 2019 crwdns2892120:0crwdne2892120:0 Dan

Question 15

0 crwdns2873741:0crwdne2873741:0

No backlight - LCD working, inverter replaced, backlight replaced

crwdns2894114:0crwdne2894114:0 iMac Intel 21.5" EMC 2389 Repair crwdns2886779:00crwdne2886779:0

Matt

Edited by author

Yan 21, 2019

Edited by author Yan 21, 2019 crwdns2892120:0crwdne2892120:0 Matt

Question 16

0 crwdns2873741:0crwdne2873741:0

iMac sd card reader pinout

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Moment Films 39

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Ndz 27, 2018

crwdns2893560:0crwdne2893560:0 Ndz 27, 2018 crwdns2892120:0crwdne2892120:0 Moment Films

Question 17

0 crwdns2873741:0crwdne2873741:0

iMac shutting off and rebooting after a few seconds, looping

crwdns2894114:0crwdne2894114:0 iMac Intel 21.5" EMC 2389 Repair crwdns2886779:00crwdne2886779:0

Simon

crwdns2876282:0crwdne2876282:0

Kho 6, 2018

crwdns2876282:0crwdne2876282:0 Kho 6, 2018 crwdns2892120:0crwdne2892120:0 Simon

Question 18

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No Internal or External Display or Boot Chime - Screen Share Works

crwdns2894114:0crwdne2894114:0 iMac Intel 21.5" EMC 2389 Repair crwdns2886779:00crwdne2886779:0

Zachary Maillard

crwdns2893560:0crwdne2893560:0

Dzi 5, 2018

crwdns2893560:0crwdne2893560:0 Dzi 5, 2018 crwdns2892120:0crwdne2892120:0 Zachary Maillard

Question 19

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GPU replacement & logic board upgrade

crwdns2894114:0crwdne2894114:0 iMac Intel 21.5" EMC 2389 Repair crwdns2886779:00crwdne2886779:0

Scott Havard 47crwdns2890272:0crwdne2890272:0

crwdns2893562:0crwdne2893562:0

Mha 16, 2016

crwdns2893562:0crwdne2893562:0 Mha 16, 2016 crwdns2892120:0crwdne2892120:0 Scott Havard

Question 20

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fan beside disc drive will not run.

crwdns2894114:0crwdne2894114:0 iMac Intel 21.5" EMC 2389 Repair crwdns2886779:00crwdne2886779:0

Dan 442.4crwdns2890272:0crwdne2890272:0

crwdns2893562:0crwdne2893562:0

Yan 13, 2016

crwdns2893562:0crwdne2893562:0 Yan 13, 2016 crwdns2892120:0crwdne2892120:0 Dan

crwdns2888378:0iMac Intel 21.5" EMC 2389 crwdne2888378:0

iMac Intel 21.5" EMC 2389 crwdns2893876:0crwdne2893876:0