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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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power supply failed need advice

hey everyone, i currently work in the IT department at a large local hospital and there is a junk area where the various departments throw away old junk computers and stuff of that sort,

well yesterday i was going through the junk and came upon a 27inch mid 2011 imac with no hdd or ram or hdd caddy but i do have ram for it right now,

but it will not power on, i showed it to our mac guy and he says the power supply is dead which makes sense, however i am having a hard time finding a replacement,

most of the ones i do find are for a 2009-2010 27inch imac and i doubt it would work, but does anyone know where i can find one for a good price or am i out of luck?

also i have seen some threads on the net of some people upgrading the video card to one with a gig of memory is it possible to do that to this one aswell?

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I replaced the power supply but still no fans or led's could it be the logic board or something else?

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The part you are looking for is: 310 Watt Power Supply P/N 661-5972

Here's one source: Mac Palace

Is that what you put in?

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yup still no power, no leds or fans or anything i an hear a hum from the power supply

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This model also had some issues with the GPU that Apple fixed for free. Please give us the last four figures of the serial number located on the bottom of the stand and I'll look it up just in case.

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already looked into that and mine is not covered

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Is the unit you put in new or another used part? It's possible the unit you put in was bad. Also check your connections are they fully seated and the connectors aren't damaged.

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used i dont think you can get a new one for a 2011 model any more, i did let a friend of mine borrow it for a bit and he put it in his 27 inch and it worked so either the logic board is so fried that no power is getting to it or anything else or something else is wrong

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luke9511 will be eternally grateful.
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