We have a 2009 iMac that I got from a friend a few years ago. It stopped powering on a while back. There is sign of life whatsoever. Is the likeliest culprit the power supply?

Yes, I know it's not worth fixing. It would be a fairly inexpensive repair project to try, though, if the problem really is the power supply.

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My life goes smoothly and in regular intervals

If it wax 2010 or newer — maybe. But 2009 means C2D. So pass.

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Edited 999 time(s). Last edit at 12:08PM by jdc.

Leave it plugged in for a week or so and try again.

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Saint Cloud, Minnesota, where the weather is wonderful even when it isn't.

Could try this too:

Quote

Reset SMC of an older iMac, Mac Pro, Mac Mini
On older model desktop Macs without security chips, here is how you reset the System Management Controller:

Shut down your Mac
Disconnect the power cord
Press and hold the Mac’s power button for 5 seconds
Release the button
Reattach the power cables and boot the Mac as usual

I used to have a Mac laptop that wouldn’t boot or do a dang thing unless I reset the SMC.



Edited 1 time(s). Last edit at 12/24/2021 08:50PM by pdq.

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jdc
If it wax 2010 or newer — maybe. But 2009 means C2D. So pass.

Not necessarily. My Late 2009 iMac has an i7-860. The Core 2 Duo was just used in the bottom of the line model.

Edit: added that it is a Late 2009 model



Edited 1 time(s). Last edit at 12/24/2021 11:26PM by JoeH.

Could be useful if you want a machine that runs Snow Leopard

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ka jowct
We have a 2009 iMac that I got from a friend a few years ago. It stopped powering on a while back. There is sign of life whatsoever. Is the likeliest culprit the power supply?

It may require a new PRAM battery:

[www.ifixit.com]

I think I have a BR2032 battery here. Can try that as well as the SMC reset. The iMac has been sitting unplugged for months. I did recently plug it in and try to power it on, but no luck. I have to get into it to remove the drive anyway, so that I can recycle it if it’s really dead. I may as well take a stab at fixing it.

It can run High Sierra, according to Everymac.

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My life goes smoothly and in regular intervals

Quote
pdq
Could try this too:

Quote

Reset SMC of an older iMac, Mac Pro, Mac Mini
On older model desktop Macs without security chips, here is how you reset the System Management Controller:

Shut down your Mac
Disconnect the power cord
Press and hold the Mac’s power button for 5 seconds
Release the button
Reattach the power cables and boot the Mac as usual

I used to have a Mac laptop that wouldn’t boot or do a dang thing unless I reset the SMC.

So, you’ve got 1 and 2 done; I would press the power button while unplugged for at least 5 seconds - maybe 20 - then release, plug back in, cross fingers and try to boot.