Model A1312 / Mid 2011 / 2.7 & 3.1 GHz Core i5 or 3.4 GHz Core i7 Processor, ID iMac12,2

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Graphics card is dead. How to replace. What to replace with.

Graphics card is dead. How to replace. What to replace with. Where to get replacement. 27" 2011 A1312.

Thanks!!

Beantwoord! View the answer Dit probleem heb ik ook

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Has anyone been successful in getting their video card replaced by this program:

https://support.apple.com/en-us/HT203787

My machine was purchased in June 2011. I have never had any issues with it until the video card died. I am past the timeframe of the replacement program, so that's why I was looking at doing it myself. Anyone have success with Apple honoring after the timeframe?

Thanks!

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Nothing ventured, nothing lost ;-}

If you can bring your system into an Apple Store to see what they say.

As you noted the program has ended so you'll need to use what ever you can do to entice the service manager you need your system fixed, use your feminine-wiles to the max here. Make sure to schedule mid morning & mid week when the staff is at their best mood. Good Luck!

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Mine died yesterday. The genius at the Topanga mall said that there is nothing he can do for me and it will be $490 to fix it.

- Doug

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Daughter had what appeared to be a bad video card but after reinstalling OS all worked supprisingly well.

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Ok...first attempt completed. Result: Got the Apple "bing" like it was booting and static noise like TV that is not tuned to a channel. I used your guide to get as far as taking the motherboard and heat sinks out. Took apart the GPU card and heat sink. Cleaned and put fresh thermal paste and compound on. The only thing I could not do was put back in the black foam gasket like piece that surrounds the GPU chip and extends through parts/chips to the edge of the GPU board. The black foam was fragile and seemed to damaged from use and/or heat. It seemed to be used as just a cushion and I could not restick it in place or find a replacement, so I did not put it back on. Could this be my problem?

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Verspreid de kerstsfeer
Krijg 12€ korting op je aankoop van 50€ of meer met de code FIXMAS12
Verspreid de kerstsfeer
Krijg 12€ korting op je aankoop van 50€ of meer met de code FIXMAS12

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Gekozen oplossing

I've had about five repaired personally with that program and an untold number from this site have used it.

UPDATE

I have had about 70% success reflowing the GPU with a hot air work station.

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We don't have a logic board replacement or a GPU card replacement guide. But this guide will get you 90% of the way: Installing iMac Intel 27" EMC 2429 Dual Hard Drive Kit. Once you get the logic board loose (Step 31) finish removing it from the system.

Do make sure to use a ESD mat and proper ESD protection here! The GPU card can now be removed and here are the possible replacement units:

  • AMD Radeon HD 6770 (512 MB of VRAM) - 661-5967
  • AMD Radeon HD 6770 (1 GB of VRAM) - 661-5968
  • AMD Radeon HD 6770 (2 GB of VRAM) - 661-5969

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Thank you! I will take a look at this info. I'll let you know what happens!

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Ok...first attempt completed. Result: Got the Apple "bing" like it was booting and static noise like TV that is not tuned to a channel. I used your guide to get as far as taking the motherboard and heat sinks out. Took apart the GPU card and heat sink. Cleaned and put fresh thermal paste and compound on. The only thing I could not do was put back in the black foam gasket like piece that surrounds the GPU chip and extends through parts/chips to the edge of the GPU board. The black foam was fragile and seemed to damaged from use and/or heat. It seemed to be used as just a cushion and I could not restick it in place or find a replacement, so I did not put it back on. Could this be my problem?

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Is there any chance that an iMac that came with a GPU, will still work with its GPU removed and not replaced at all? Since there are models that don't even have a GPU, wouldn't that make sense?

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Not that simple! The systems BIOS (EFI) tells the OS what hardware is present and it then loads up the needed OS drivers to access the graphics services of the system.

What I think maybe confusing you is all of the iMac's have either CPU's which have Intel's graphics services or have a dedicated GPU. Not all of the dedicated GPU models have Intel CPU's with graphics services! So if you don't have a model with graphics services there is no means to see anything on the display.

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Angela zal eeuwig dankbaar zijn.
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