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Model A1419 / Late 2012 / 2.9 & 3.2 GHz Core i5 or 3.4 GHz Core i7 Processor, ID iMac13,2

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1 Beep every 5 seconds!

I change the memory, the power supply, the Logic Board and the Processor and change the hard drive just in case, but still one beep every 5 seconds!!!! What can I do? The iMac does not boot, just turn on the fan... I tried SMC reset and other keyboard fixes but the keyboard looks like does not have power. :-(

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Any updates friend? My mac is beeping one time also and now i'm afraid to repair it if is possible that the error persists

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On the Apple site it tells that there's no RAM or it's not supported. It only supports 600 MHz PC3-12800 DDR3 SDRAM SO-DIMMs (204-pin). The RAM might also not be properly seated or the sockets are broken or the slot pattern isn't like it should be (the way the RAM is in the 4 sockets might not be in the right order) or one or more dimms are defective.

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I receive all that information and change all the memories. Also, I change the logic board and processor and the problem persist. A local Apple technician try to fix it too, but fail. Right now I have a new iMac. The one with the problem is in my office waiting for repair. :-( If there is a possibility that the problem is about software?

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Have you tested above things already?

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Try disconnecting the Headphone Jack on the mainboard

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OMG, #jontaine , u r a saver, disconnect the headphone jack really work for me , Thanks so much !!

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One of my client's iMacs had the exact same issue. After pulling my hair out having swapped out RAM, cleaning the connectors with IPA, changing the order of fitting RAM etc, I came across this article. This morning I disconnected the headphone jack from the logic board and BAM! It now works! How incredibly random is that?? Good old Apple.....

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I tried disconnecting headphone jack connector but no luck

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@indra - Sorry that’s a Red Herring!

This only works is the headphone jack has the DAC chip on the daughter board with the jack socket. Not all systems have this setup. And this only happens when the chip has shorted out.

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@danj my iMac is 27 inch 2015

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