Random black screen...AHT shows 4MOT/40000003: HDD-1333

Question

iMac Intel 27" EMC 2429

Modell A1312 / Mitte 2011 / 2,7 & 3,1 GHz Core i5 oder 3,4 GHz Core i7 Prozessor, ID iMac12,2

708 Fragen Alle anzeigen

Nick @chewbaca

Rep: 1

1

Veröffentlicht: 1. Mär 2019

Einstellungen

Random black screen...AHT shows 4MOT/40000003: HDD-1333

Have been experiencing random black screen upon waking the computer up from a longer period of sleep 10-12 hours. Screen initially lights and then goes black. Thought it may be the GPU (AMD Radeon 6970M 2gb) so ran the AHT to see if it came back with anything on it but instead got 4MOT/40000003: HDD-1333. From what I've found online this seems to be the hard drive fan behind the motherboard. This imac was special ordered with two drives, SSD with the OS on it and then a secondary HDD. Do you think replacing the fan will fix the black screen issue? Is there a fan for each hard drive in the computer or are they stacked in the same location? Thoughts on what this may be and possible fixes?

Beantwortet! Antwort anzeigen Ich habe das gleiche Problem

Ist dies eine gute Frage?

Ja Nein

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3 Kommentare

Have you changed a hard drive?

2. Mär 2019 von mayer

Nope. Factory SSD and HDD.

2. Mär 2019 von Nick

Part of the problem is I'm not sure which drive would need replaced if one does, since there's two and AHT doesn't tell you much along those lines....

2. Mär 2019 von Nick

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2 Antworten

Gewählte Lösung

mayer @mayer

Rep: 685,3 Tsd.

MacHale Enterprises

3,4 Tsd.

1,1 Tsd.

2,6 Tsd.

Veröffentlicht: 2. Mär 2019

Einstellungen

This model had major GPU issues and had a Apple repair program for replace it (of course, now expired). Hook it up to an external monitor to help isolate the issue. If the external exhibits to same issue, you will need to replace or repair (reflow) the GPU.

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1 Kommentar:

Thanks! Yes I saw the repair program when googling the issue but as you said it's expired unless you're in new Zealand…found a new GPU off Mac parts depot…may try to open it up and replace that and the HDD fan at the same time and see if that doesn't fix it. Thanks!

2. Mär 2019 von Nick

Einen Kommentar hinzufügen

Part of the problem is I'm not sure which drive would need replaced if one does, since there's two and AHT doesn't tell you much along those lines.... — Nick
Thanks! Yes I saw the repair program when googling the issue but as you said it's expired unless you're in new Zealand…found a new GPU off Mac parts depot…may try to open it up and replace that and the HDD fan at the same time and see if that doesn't fix it. Thanks! — Nick