IMac won’t start up A1195

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Gregrego Author

Level 1

8 points

IMac won’t start up A1195

I was given the task to troubleshoot an iMac 17” model A1195.

- won’t startup, will power on.

- display stays dark. PowerLight will strobe, or come on solid.

- CD drive seems to spin on startup and cycle continuously.

- will continue to stay in this dark screen, CD spinning loop until I unplug or press the power button.

- tried the Apple+cmd+P+R on startup, seemed to change the sequence of events but still no display.

- now, computer will power up for about 20 seconds, CD will spin, and computer will **** down.

Not sure where to go from here, I know this computer is old and likely not worth fixing, just looking to see if it’s a simple fix, software etc.

Posted on Jul 26, 2018 9:02 AM

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Answer 1

macjack

Level 10

111,242 points

Jul 26, 2018 9:05 AM in response to Gregrego

Try an SMC reset:

https://support.apple.com/en-us/HT201295

Try starting up in Safe Mode:

Use safe mode to isolate issues with your Mac - Apple Support

Try Single User Mode (hold command-s keys)

https://support.apple.com/en-us/HT201573

At the prompt, enter this command:

/sbin/fsck -fy

Press the Return key.

This will check your directory and report that it was OK or repaired. Then enter this command to startup normally:

reboot

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Answer 2

Gregrego Author

Level 1

8 points

Jul 27, 2018 9:02 PM in response to macjack

None of these things made a difference. The only thing I could do was the smc reset, didn’t change anything. Computer turns on, led 1,2 are on, then shuts off within a few seconds.

I tried removing the ram and starting up, it stayed powered on, but the main led just blinked continuously. Tried the ram in all combinations, nothing changed.

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Answer 3

Gregrego Author

Level 1

8 points

Jul 27, 2018 11:03 PM in response to Gregrego

Update on the LED's.

plug in, led 1 is on solid.

turn on, led 2 comes on.

led 3 blinks momentarily, i hear sound from the speakers, which cuts out within 1 second, and corresponds with led 3 going off.

led turns off.

this sequence will cycle endlessly. nothing i do changes it.

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IMac won’t start up A1195

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