Model A1225 / Early 2009 / 2.66, 2.93, or 3.06 GHz Core 2 Duo processor

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Appears to be totally dead

It started running slow recently, then I got the flashing globe / ?. After a couple of attempts to repair OS from start up disk, I plugged USB drive in and managed to load OS on that. This allowed me to connect to internal drive and verifying it showed it to be in good health. I left the imac running last night still connected to the usb drive and running a recovery application to recover some photos. This morning it was off. Checked power cable, fuse etc. Pressing on / off button does nothing. Age - about 30 months -

Would it be heat related - it had been running the recovery application most of yesterday. Appeared to be running okay. Running from the usb drive.

Would it be the internal battery? The imac did tend to be on or sleeping most of the time i used it.

Many thanks

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Take the frame off and look at the diagnostic LEDs to the right of the RAM slots and let us know what you find. Here's how to get the screen off: iMac Intel 24" EMC 2267 Hard Drive Replacement

Here's how to get the bezel off: iMac Intel 24" EMC 2267 Front Bezel Replacement

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The four LEDs seem to be all off even with the power lead plugged to mains

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I've never seen one this dead. Here's what the book says:

LED Startup Sequence

LED #1 = Power available.

If no LED is visible:

• Verify AC source

• Verify known-good AC cable is connected

• Verify cable connection between AC inlet and power supply

• Verify cable connection between power supply and logic board

• Verify power supply

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Verified the cable by plugging into a screen. I changed the battery as I had it all apart. I see mention of a reset - is a reset necessary?

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At this point a reset wouldn't hurt. You're looking at replacing the power supply.

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thank you for you help - the power supply is what I was thinking - where is the reset as I might as well try it.

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If you get a flashing globe it means that your Mac is searching for a network boot-drive. Try holding "Alt" button while booting and see if you get prompted to pick your standard boot volume.

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Thank you for your help - no longer booting up so not possible. Looks like power supply.

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Peter will be eternally grateful.
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