Question about Apple 24" iMac Desktop

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Imac 24" 3.06 will not boot at all. No activity whatsoever. Can I place a newly acquired 2.4 logic board in it? or even a 2.8. I must act quickly if Your answer is yes

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Motherboard? You need a new power supply.

Posted on Dec 26, 2013

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Posted on Jan 02, 2017

  • 33 Answers

SOURCE: usb ports broken

whats the serial # i can look up logic board # for you

Posted on Nov 16, 2008

KenKaBob
  • 89 Answers

SOURCE: Will not boot after one year break

Hi, Sorry you are having problems,
OK, so, all macs have internal batteries. When a Mac has been unplugged for a long time, the battery empties and makes the first few bootups pretty rough.
One answer I can give you right now is that this iMac is not work more than $150 in the second hand market. Although it is a beautiful machine, I don't recommend inverting any money in it.
Unfortunately, if you had waited a little longer, say like 30 minutes, your mac might well have booted up properly.
Have you had it unplugged now for a couple of hours?
Try it again and let it run.
But, if it does not work, chances are that something blew, probably the mother board.
Sorry..

Posted on Apr 02, 2009

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Did you read the Apple support page on this problem? they are really good in helping: Troubleshooting My computer won turn on

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My Apple iMac G5 Mac Desktop can't start, it is giving me a white screen and an apple logo in the middle. Help me out


You will need to acquire and install a new power supply. I would suggest having a professional do it, being the iMacs are difficult to work on and not for the novice.

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I have an imac intel 17" which is kernel


If someone has looked at this issue and determined it to be a logic board problem then the only solution is to replace the entire logic board.

You can purchase them on usedmac.com here for $289:
http://www.usedmac.com/catalog/product_info.php?cPath=34_160&products_id=2384&osCsid=555099ea1dd6e69fa573fbc345fbe149

Here are instructions on replacing the logic board yourself:
http://www.ifixit.com/Guide/Repair/Installing-iMac-G5-17-Inch-Model-A1058-Logic-Board/971/1

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1 Answer

Imac g4 won't start but shuts down when apple logo appears on screen


Are you sure the iMac is really shutting down or just turning off the backlight? The tell-tale sing would be to let the unit fully boot-up (wait 3 minutes) and the press the button the apple keyboard that ejects the CD-ROM. If the CD-ROM door opens, you iMac is running with disabled or broken backlight.
The inverter circuit on the iMac G4 is known to be weak.
There could be another problem, though. The iMac G4 is also known to have weak internal power supplies. Here's how you can tell:
Hold down the CMD OPT "O" and "F" keys at the same time while pressing the power button. This will tell the iMac that you want to boot into the Open Firmware shell, bypassing the Mac OS X startup. If this works, your power supply is good, the inverter is good and you have a problem with your Open Firmware boot string. To fix the boot string, Power on the unit while holding down the keys CMD-OPT-P-R to zap the parameter RAM (PRAM) and reset everything to defaults.
If you were not able to boot into the Open Firmware shell, your problem is either a failed power supply or a failed screen backlight. The last possible culprit is your iMac could suffer from "Bulging Capacitor Syndrome", where a batch of iMac G4s, iMac G5s another electronics were fitted with a bad batch of capacitors. Eventually, the caps will rupture and cause irreparable damage to the logic board. Only way to verify this is to pull the unit apart and visually inspect. If you see little green or blue cylinders that seem to be bulging or oozing a thick oily goo, that's your problem. Only recourse is to shop around on eBay and look for a replacement logic board.

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1 Answer

Imac g5 17 gets some power but no display


Assuming you have the model with four diagnostic LEDs, the lack of LED-3 indicates that the computer and the LCD display are NOT communicating. This LED should be ON when the computer is turned on and video signal is being generated.
The first solution is to reset the PRAM (hold command-option-P-R after the boot chime until you hear another boot chime). If video does not appear, then power down the computer and reset the SMU by pressing the SMU button ONCE ONLY. (The SMU button is located just south of the fan housing and is the button further away from the fan; the other button is a power button.) If this does not fix the video, the next step is to remove the optical drive. If this does not fix the video, put everything back together and attach an external display using the dongle supplied with the unit. If the external display fails to work, you have a logic board problem; otherwise, you have an LCD panel, inverter, or cable problem.

Mar 30, 2010 | Apple iMac G5 Desktop

1 Answer

Will not boot after one year break


Hi, Sorry you are having problems,
OK, so, all macs have internal batteries. When a Mac has been unplugged for a long time, the battery empties and makes the first few bootups pretty rough.
One answer I can give you right now is that this iMac is not work more than $150 in the second hand market. Although it is a beautiful machine, I don't recommend inverting any money in it.
Unfortunately, if you had waited a little longer, say like 30 minutes, your mac might well have booted up properly.
Have you had it unplugged now for a couple of hours?
Try it again and let it run.
But, if it does not work, chances are that something blew, probably the mother board.
Sorry..

Mar 18, 2009 | Apple Computers & Internet

1 Answer

Usb ports broken


whats the serial # i can look up logic board # for you

Oct 21, 2008 | Apple iMac G4 Desktop

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IMac G5 not connecting to Internet sometimes


hi,

Please follow the steps given at the below mentioned link to resolve the issue:-

http://forum.insanelymac.com/index.php?showtopic=25477

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I don't think the installer will work over a network. I think you need an actual CD of 8.5/8.6 or an external drive with the OS on it.

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Consistent hard Drive BOOT ERROR after an upgrade to MSNV-939 motherboard


You can run a disk manager for your drive however, I'll bet you will find its windows boot.ini. It may read just fine for a dual boot system but think about this. Windows can get confused real quick. I'm talking about the regestry. Take the time and do a fresh install of your Linuex and than re-install windows "clean install". I'll bet everything works out just fine. When 1 changes MB's there is a whole list of new drivers PCI devices loading into windows. Your system will run better with one copy of drivers for your new board and windows will not carry a list of old drivers and PCI devices of your old board.

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