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iMac Intel 27インチ EMC 2309 (Late 2009, Core 2 Duo 3.06もしくは3.33 GHz) ID iMac10,1, EMC 2374 (Late 2009, Core i5 2.66 GHzもしくは Core i7 2.8 GHz) ID iMac11,1

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iMac Wi-Fi totally dead

Greetings!

I have a long-term issue with my iMac 27” 2009 Wi-Fi connectivity.

It all started with rare Wi-Fi disconnections, which became more and more often by time.

It was this way: everything worekd fine, and after the restart - boom, WiFi was always in search, sometimes it could be fixed by reboot, but not always. Later on, the WiFi was completely dead.

Everybody said I should replace the WiFi card. But before that, someone advised me to go to Preferences -> Network and remove the WiFi by pressing “-” for it and then add it back in. I’ve removed it and after that it never came back as an option. The system was like: There is no WiFi, hence no WiFi settings! No WiFi hardware at all!

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Block Image

Yesterday I’ve bought the new WiFi card & WiFi cable, because I decided to remove the problem by replacing all of the parts. I removed old parts, installed the new ones and still no WiFi!

I’ve reinstalled the OS, tried the SMC and NVRAM reset. I’ve tried Terminal commands: sudo networksetup -listallnetworkservices showed me no WiFi option, ‘networksetup -setnetworkserviceenabled WiFi on’ answered me ‘WiFi is not a recognized network service’ After searching some forums, i’ve noticed people said “This is the hardware issue, replace your card”, but I already have!

Please help me, I have no idea what to do. Ethernet is not an option for me, because it’s also dead!

1 pic - The parts which were bought for replacement

2 pic - Is what i see in network settings

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You state the Ethernet port is also not working is that correct? Have you tried using it.

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yes, ethernet is also dead

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I think you have a deeper problem within your logic board. Bluetooth, WiFi & Ethernet connect to the PCH (IBEX PEAK) using USB ports as well as PCI ports it offers.

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My bluetooth works fine

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Thats possible! it maybe the only interface working. You clearly have a logic board failure! I'm suspecting you had a lightning storm just before you noticed the failures. The strike go into your system burning things out.

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Ok, if this is true. could you please suggest me what should be replaced and is it possible at all?

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There are two directions you can go here. The first is finding someone near you to repair your logic board. The other direction is to just replace it. This series came in two versions the older used a Core 2 Duo and the newer ones used either a i5 or i7. The Core 2 Duo boards are cheaper than the i5 or i7. If you can swing it I would go with either the i5 or i7

iMac 27" Logic Board 3.06GHz C2D (09) : Recycled $225.30

iMac 27" Logic Board 3.33GHz C2D (09) : Recycled $251.97

iMac 27" Logic Board 2.66GHz i5 (09) : Recycled $299.96

Mac 27" Logic Board 2.8GHz i7 (09) : Recycled $370.62

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I have an i7 model right now. If to speak about repairing, what exactly should be repaired? Some kind of internet controller?

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Taras Vasylashko さん、ありがとうございました!
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