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Versione corrente di: Jasper ,

Titolo:

Infinite Bootloop on iMac 27 2012

Testo:

Hi,

I've gotten a broken iMac from 2012 and currently im trying to fix it. It was already at a local fixing store, where the employe could tell me that its most likely an issue with the logic board.

My problem:

The iMac restarts more or less instantly and while doing that the screen is showing a pure white picture, without any apple logo.

Keyboard is not working (you can’t activate or deactivate caps lock), i’ve tried to reset nvram etc.

I took the iMac already apart to check if i can see any obvious issues with the logic board, but couldn’t find any.

While testing the RAM i’ve started the iMac without the screen attached and the boot loop was gone. At least i could just hear one chime sound. With the screen plugged in the boot loop started again to appear.

All four indicator led’s on the logic board having light.

Thanks in advance!

[br]

Dispositivo:

iMac Intel 27" EMC 2546

Stato:

open

Risposta Accettata:

664208

Modifica di: Jasper ,

Titolo:

Infinite Bootloop on iMac 27 2012

Testo:

Hi,

I've gotten a broken iMac from 2012 and currently im trying to fix it. It was already at a local fixing store, where the employe could tell me that its most likely an issue with the logic board.

My problem:

The iMac restarts more or less instantly and while doing that the screen is showing a pure white picture, without any apple logo.

Keyboard is not working (you can’t activate or deactivate caps lock), i’ve tried to reset nvram etc.

I took the iMac already apart to check if i can see any obvious issues with the logic board, but couldn’t find any.

While testing the RAM i’ve started the iMac without the screen attached and the boot loop was gone. At least i could just hear one chime sound. With the screen plugged in the boot loop started again to appear.

All four indicator led’s on the logic board having light.

Thanks in advance!

[br]

Dispositivo:

iMac Intel 27" EMC 2546

Stato:

open

Risposta Accettata:

664208

Post originale di: Jasper ,

Titolo:

Infinite Bootloop on iMac 27 2012

Testo:

Hi,

I've gotten a broken iMac from 2012 and currently im trying to fix it. It was already at a local fixing store, where the employe could tell me that its most likely an issue with the logic board.

My problem:

The iMac restarts more or less instantly and while doing that the screen is showing a pure white picture, without any apple logo.

Keyboard is not working (you can’t activate or deactivate caps lock), i’ve tried to reset nvram etc.

I took the iMac already apart to check if i can see any obvious issues with the logic board, but couldn’t find any.

While testing the RAM i’ve started the iMac without the screen attached and the boot loop was gone. At least i could just hear one chime sound. With the screen plugged in the boot loop started again to appear.

All four indicator led’s on the logic board having light.

Thanks in advance!

[br]

Dispositivo:

iMac Intel 27" EMC 2546

Stato:

open