はじめに
Remove the GPU and its heatsink as one unit.
必要な工具と部品
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Loosen the two Phillips screws securing the access door to your iMac.
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Remove the access door.
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To lift the front bezel off the iMac, simultaneously:
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Use your thumbs to press in the RAM arms and hold the iMac down.
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Use your index fingers to pull the small bridge of material on the front bezel toward yourself.
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Pull the front bezel up with your index fingers.
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Once the small bridge of material has cleared the RAM arms, lift the front bezel by its lower edge just enough to clear the bottom edge of the rear case.
My iMac did not have the "small bridge of material" mentioned, however the bezel just lifted off easily.
maccentric - 返信
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Disconnect the microphone cable.
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Disconnect the camera cable by pulling its connector away from the socket on the camera board.
I agree that for a simple, quick battery change, don't risk damaging those delicate wires. Ignore Step 6 and instead of disconnecting the mic and camera wires, keep them in place and just have a friend hold the plastic frame up while you change the battery, or prop it up as mentioned by Stefano C above.
Make sure you double check the new logic board for the presence of the GPU assembly before installing. I stupidly installed a new board without moving the GPU from the old one first. So i guess you can say this guide worked for me twice. :)
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Remove the two T6 Torx screws securing the display data cable to the logic board.
Wait, we need a T6 screwdriver as well?
I purchased the T8 and T10 from your site as per the parts list above and now am here with an opened iMac on the dining room table unable to continue :/
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Remove the eight T8 Torx screws securing the display assembly to the rear case.
It would be useful to use a torx screw driver with a long, narrow shank… some of these screws are in tight places.
It may also be useful to prop up the back so it is level. This will prevent the screws from falling inside. They can be retrieved once the scene is off.
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Peel back the piece of EMI tape connecting the bottom edge of the right speaker to the metal frame of the iMac.
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Peel the tape away from the lower corner of the right speaker.
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Use the flat end of a spudger to pry both antenna connectors off their sockets on the AirPort card.
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Remove the short T10 Torx screw securing the GPU heat sink to the metal logic board framework.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
26 の人々がこのガイドを完成させました。
7 Guide Comments
Competed the GPU replacement following this excellent guide. My iMac is as good as new, after weeks/months of randomly fragmented windows. Would not rate the repair as difficult, though, since no soldering/desoldering was required. Took between 4.5 and 5 hours (forgot to check the exact start time).
thx for yout reply. And i have a question.
I have done all these works. But i can't get the replacement of the GPU.
can i ask you where to get the replacement of the GPU?
it is very hard to find the GPU because it is pretty old model
hutch -
Having similar issues with fragmented windows and then freezing in some cases. Very certain it is the GPU - do I replace the paste or the board?
Fraser, I suggest checking a youtube video on how to reset the GPU's solder connections. Apparently, with the overheating the solder connections loosen causing the fragmented windows and then freezing. Normally one would replace the GPU assembly, but since these are extremely hard to find and costly, resetting the solder connections might be the only option to try.
At YouTube.com search for "Casual iMac Video Card Repair".
I've been meaning to try this repair for two years now . . . finally going to give it a try.
Ewald -
Finally got round to looking at my late 2006 iMac, and GPU overheating is the major problem now.
A temporary fix is to disable the GPU, but obviously with all video processing via the CPU, the performance is poor.
https://www.youtube.com/watch?v=1GDSolVl...
Next step - see above….got some new thermal paste - maybe it will work.
I’ll let you know
Just finished this refurb…. fantastic site and great guide.
The GPU was overheating, and initially, I used SMFan to increase minimum fan speeds and disabled the GPU by following this video
https://www.youtube.com/watch?v=1GDSolVl...
but obviously this limited performance, so I thought , maybe refreshing the thermal paste was help and it has - I decided to do the CPU and the GPU at the same time and the only issue was the antenna terminals broke on the Bluetooth board as I remove the cable - being a bit heavy handed.
A Bluetooth dongle later and this is all fine, the system still runs a little hot, but that’s to be expected and for a 13 year old Mac, its pretty good.
Thanks Folks - really wonderful.
