My G5 iMac will not turn on... Please help...

Three of the four LED lights inside the unit light up when the power button is press. When the power button is pressed I hear the chime and the front LED light turns on and the screen does a scroll and the front LED light turns off and a minute or two later the fans turn off... I am really confused and really could use all the help I can get! Thank you in advance!

By saying that fans turn off you mean that the whole computer shuts down or just fans? First generation iMac G5's were known for their capacitors going bad and there was also numerous power supply failures. What you said sounds like you might have one or both of those problems. Later models can of course also be affected but with them the more common issue is graphics chip's solder going bad and it can also cause symptoms you describe.

Similar Messages

  • BlackBerry Torch 9800 Will NOT turn on PLEASE HELP

    My phone went black today and will not turn back on.. I have taken out the battery and the sim card, when i put them back in the red light at the top just flashes and nothing comes on the screen. I have tried to boot it by charging it and hooking it up to the computer. The BlackBerry desktop manager says it can not connect to the phone. PLEASE HELP

    Parsifal wrote:
    I have had the same problem 3 times over the past 2 years.  The first time, Telus replaced the phone immediately as I was told it was a factory defect.  The second time happened within the warranty period and TELUS decided to send it to BlackBerry to get it repaired.  Phone came back,4 weeks later and worked properly but within a month same issue, does not boot up. Third time and three weeks later a new Torch came back from BlackBerry w on what was wrong with that phone.  Now I am staring at the same problem on the THIRD TORCH I HAVE HAD IN TWO YEARS!!! What kind of defective product is BlackBerry shoving down our throats.  As consumers we should expect what we purchase to work and not have to waste 4 hours reloading this and uploading that. Frankly I don't want to find the time to upload a bootfile that is missing, WHY IS IT MISSINg? Why is there a problem in the first place with the phone.  If there is a defect, own up to it and recall them.  I have had BlackBerries for the last 10years, this one is going into Lake Ontario and I am buying a an ANDROID.  Its funny how even the sales people at the corporate TELUS Store and the tech support atff on the phones told me to just chuck it and never buy another BlackBerry again because they are also sick and tired of letting their customers down.  
    Is this a 9800 you're talking about? Reading your post, this is actually the 4th time that you've had this happen, with 3 different phones, correct?
    When you talk about "reloading this and uploading that", are you talking about reloading the OS, or applications? I'm wondering if there's a particular application you're loading that's causing it.
    While I'm sure there are faulty 9800s out there, and I've had a few myself (among 80 users), I find it hard to believe that you could end up with three faulty ones in a row. Are you able to get the battery charged somewhere, just to be sure it's not just a dead flat battery? It might be that you've got an application that's flattening your battery to the point where the phone can't start, even on the charger.

  • My iPhone 5 will not turn on (please help)

    My iPhone 5 will not turn on. I turned it off in the morning and when i went to turn it back on in the afternoon if wouldn't turn on. I plugged it in and it began flashing the startup screen with the apple logo on it. I tried to restore it but it couldn't, can not get into apple shop until tuesday! please help

    i have found my own fix plug the phone into laptop with iTunes open, Hold home and top power button, until the logo vanishes, then let go of the power button keeping hold of the home button at the bottom, it will then ask to connect to iTunes, as u have it open an attached to the computer u can click the pop up an restore the phone!!
    hope it helps

  • Ibook will not turn on, please help. ASAP

    I have an i book laptop but i am not sure what model it is. I just know that it is about 4 to 5 years old. I used to have some one that could fix it for me and tell me what is wrong. But i do not have them any more. My computer will not turn on. Even when i plug the power block into it. I have looked at the mac support things. but none of them have helped me. if some one out there could help me i would be sooooooo great full. Please some one try to help me solve this problem. i have tried the (PMU) restet, when you press shift, ctrl, option simultaneously. Then you are supposed to wait 5 seconds then turn it on. that did not work. For many months now i have been struggling with this problem. i really need some help, because the mac support on this website has not been helping me. So maybe by creating this account, and writing this letter. Some one will come to help me.
    By the way i cant even find out what OS it is because i cant turn it on to find its information

    Thanks - but I can't see anything, the screen is dead (which is why I put the disk in - I was following the troubleshooting instructions), all I hear is the fan, but there's no screen prompt. I've tried resetting the PMU and the PRAM without success -- I've been having this problem on and off for a few weeks but it usually started ok the second or third time. Now, however, it's not working at all.
    Hi,
    You may be able to eject the CD by starting in open
    firmware.
    Hold down the command-option-o-f keys as you start.
    When you see some text on the screen release them. At
    the prompt type "eject cd" (without the quotes) and
    press return. It should eject after a few seconds.
    Next try resetting the NVRAM. At the prompt type:
    reset-nvram <return>
    set-defaults <return>
    reset-all <return>
    It should restart after the third command is
    entered.
    John
    ibook G4   Mac OS X (10.4.8)  

  • My ipod will not turn off please help???

    Everything works on my ipod, but it will not turn off. It will play and pause but not turn off.

    I too have had this problem. In fact it seems to be a fairly common problem, suggesting that it is an unaddressed bug.
    Here's what you can try:
    1. Reset your iPod by holding down the Menu and Select buttons simultaneously for 5-10 seconds. After your iPod reboots, see if it will turn off. If not:
    2. Restore your iPod using iPod Updater, which you can download from http://www.apple.com/ipod/download/ . Restoring your iPod will delete all songs, pictures etc and reload the iPod's operating system. If that doesn't fix it, you can:
    3. Try a work-around. Can you turn it off using the Sleep menu option? If you don't see that in the main iPod menu, go to Settings/Main Menu and turn on the Sleep menu option. This didn't work for me, but others have een able to turn their Nanos off this way.
    If none of these things work, your only option is to have Apple replace you iPod. You can do this by contacting Apple support, or by going to the Genius Bar at an Apple retail store.
    Several people (including me) have seen the not-turning-off problem in conjunction with the Nano frequently showing a message saying that firewire connections are not supported. In my case my Nano became unusable because the firewire message would pop up so often that I couldn't navigate through the menus to get it to play anything. I took my Nano to an Apple store and the Genius Bar guy replaced it on the spot. Unfortunately the replacement also doesn't work (headphone jack doesn't work so I can't hear any music) so I will have to go back again, but don't let my run of bad luck prevent you from getting a replacement.

  • 3 beeps after ram upgrade, computer will not turn on, please help!  I have tried everything.

    I have a late 2011 Macbook Pro 15 inches, i recently upgraded the RAM from Crucial 8gb (4gbx2) to Crucial 16gb (8gbx2).  I have done thies before, was er careful, and had antistatic clip, clean work surface, etc. When trying to turn the computer on again, i hear 3 slow beeps, repeated three different times, and the computer does not turn on.  I have been looking around for solutions.
      I have already swapped the memory modules, cleaned them, dusted the whole computer with air can, put the old ram in and still have the 3 beep problem.  It no longer works even with the old ram.  The computer was working perfectly fine before this.
      Am i missin a step?  I saw in a video on youtube that i have to reset the RAM with Alt+P+R+Power button, but nothing happens.
      Please help, i am self employed and my Mac Book Pro is the computer i work with!
      I have Lion operating system, everything updated very recently.  Stock 512 gb hard drive.

    Thanks for the quick reply Allan, i have reseated the ram 4 times, swapping top and bottom Ram modules, and pushing them in firmly and pressing down evenly with both hands. 
    I tried to put the old ram in as well in case the New RAM was bad, and that did not work anymore either.  I am from Mexico and live in Mexico City, and it is not easy to send the RAM back and get an exchange.  I will go to a MAC repair center on monday, but think i am missing some simple step somewhere. As i said this is my work computer and i really need it!
      I have reread what i wrote before, to clarify my computer was working fine with the old 8 gigs of ram, i just wanted it to be faster, and bought 16 gb since they are now much cheaper than a few years ago.

  • IPod Touch Will Not Turn On - Please Help!!!

    Hi...I have a 1st generation touch. I used it last week and it had a low charge. When I tried to charge it this morning nothing happened. The computer or iTunes would not recognize the touch. I remembered updating iTunes the other day...so I did an uninstall and then reinstalled...wondering if that was the issue. That did nothing. I've tried to go into recovery/DFU mode...and nothing...no response at all. Unfortunately my touch is out of the two year warranty. The touch has never been jailbroken. Does anyone have any suggestions on how I can save my touch?
    Please...any help would be appreciated.
    Thanks.

    having the following problem...
    my ipod touch was hot at the bottom rear when i picked it up. for no reason. the display worked ok but didnt let me slide to unlock or slide to switch off. i have since fully charged it, fully discharged it several times and the screen remains black no matter which buttons i press. i have tried the reset by pressing top and bottom button for 10 seconds still nothing happening. It is now not recognised by the computer when i switch it on. or the tone from the computer when the usb is connected. iv not dropped or damaged the ipod in any way. tried chaarging via ac plug for iphone and via laptop.
    just there tonight i tried charging via a different usb port on the laptop and that has brought it back to life. started charging again etc but the screen has what looks like a watermark across the right hand side making the touchscreen function at that side difficult to use. hopefully this will help.

  • My ipod will not turn on, please help.

    My problem is different than the other ones posted on the forums, I have a 60gig ipod. Once it turns off I can't get it to turn back on unless I reset the system by pressing the menu and center button. Is there a way without restoring the original settings? It works fine once its on, but it is really frustrating to have to reset the ipod every time I want to use it. And I don't want to create more problems by constantly restarting it, that can't be too good for the ipod. It still syncs fine with the computer and everything. And it has a charge. If I reset the ipod, it will play fine. It's just after I use it, I turn it off, and next time I want to play it, I would have to reset it.

    Hi Patrick,
    You sound like you know something about a thing or two...Would you know anything about myself and other people 's problems about
    the Apple logo flashing on and off with a low whining down sound and then restarting again,and this goes on and on,I guess untill the battery dies.
    I have a 5th Generation 80GB Classic ipod.
    I went to turn on the ipod and nothing happened. I tried the reset method by sliding the hold switch ON, then OFF, and pressed both the top area of the MENU button and the middle of the SELECT button, at the same time, but with two different fingers.
    All I’m getting now is the black screen with the Apple logo appearing for about six seconds, then off for about 6-8 seconds, and ON, over and over again and so far it has been doing this for about fifteen minutes now.
    I called APPLE, and they told me to install iTunes, and plug in the ipod, and hit the RESTORE Option, but for some reason, the newly downloaded QUICKTIME and new itunes I just downloaded from Apple does not open up the itunes when I double –click on it either from the desktop, or the Start>Programs>itunes folder.
    The reason for all this was that I was clearing off one computer’s hard drive to another new computer before I wipe the Hard drive. I deleted all my mp3’s and the itunes program from the old computer and put the mp3 music files onto the new hard drive. I downloaded the new Quick time and itunes programs separately to my desktop.
    I was told from Apple that my ipod warranty has expired by about 85 days.
    I have run all the Apple updates and it tells me I am up to date. Thanks for any help.

  • Imac will not turn back on after being unplugged. Is there something I can do?

    imac will not turn back on after being unplugged. Is there something I can do?

    SMC RESET
    http://support.apple.com/kb/HT3964
    Shut down the computer.
    Unplug the computer's power cord and ALL peripherals.
    Wait 15 seconds.
    Attach the computers power cable.
    Wait another 5 seconds and press the power button to turn on the computer.
    The 5 second timing is important to a successful reset.

  • I don't have a phone plan, so I cannot text without wifi. I have been using iMessage to text my friends, until it stopped working. I can text my sisters email, but not my boyfriends iPhone. The send button will not turn blue. Help? Please?

    I don't have a phone plan, so I cannot text without wifi. I have been using iMessage to text my friends, until it stopped working. I can text my sisters email, but not my boyfriends iPhone. The send button will not turn blue. Help? Please?

    There is a problem with iMessage with what Apple says is a small number of iPhones and they are working on a fix. In the meantime try this:
    1. Settings > Messages > iMessage = Off
    2. Settings > FaceTime > FaceTime = Off
    3. Settings > General > Reset > Reset Network Settings
    4. Wait for the iPhone to Reboot
    5. Settings > FaceTime > FaceTime = On
    6. Settings > Messages > iMessage = On
    You may have to repeat the steps a couple of times.
      - with thanks to @deggie

  • G5 iMac Will Not Turn On - Power Supply Diagnosis?

    My A1145 20" iSight PPC G5 iMac will not turn on - it doesn't respond to the power button. It had been shut down for a few days, I turned on the power and it booted up as normal, the desktop appeared and I was about to open the web browser when it suddenly went dead; the screen immediately turned off with no warning or noise. There is no fan or disk noise coming from it when the power lead is plugged in, just a very, very faint electronic hum from inside.
    From reading various webpages, it seems possible that the power supply could have failed. Is there a simple way that I can diagnose this before deciding whether to attempt to replace it myself or not? I understand that there should be some diagnostic LEDs which could help identify a problem - I've removed the surround from the iMac and peeled back the black EMI film below the display but I'm not sure for what or where I should be looking (they seem to be easier to find on the 17" models).
    Whilst I know a repair might not be cost-effective on such an old machine, I have 220GB of photographs, documents and music on it - none of which is backed-up - so I am very keen to get it working and backed-up as soon as possible.
    Could anyone suggest how to diagnose the problem?

    Hi there:
    My experience with Macintosh computers has not included the G5 iMac even though I almost got one to replace a failed-under-AppleCare iMac G4 17" 1.25GHz after three/four major failures and no local support.
    ...So, I think you may be able to pull the hard disk drive out of that computer and see if an external enclosure could allow you access those files IF the drive spins up at all. Sometimes odd things happen, and the G5 iMac had some history of capacitor and other failures that could be a problem. I see there are a few free information guides here that may be helpful: http://www.ifixit.com/Device/iMac_G5
    If the battery on the logic board was dead, but the computer kept in running condition by leaving it plugged in, once the computer was left unplugged for a time then the device may fail to start. There is a way to reset the power management chip (different names for same idea as technology moved forward) and that could help in the process of troubleshooting most power related issues in the PPC Macs of later G3/G4/G5 design.
    There are troubleshooting items of interest in here http://www.apple.com/support/imac/g5/ ie: what to do when your computer won't turn on...
    Sorry to not be of direct help in this matter.
    Good luck & happy computing!

  • My imac will not turn over, what should I do

    my imac will not turn over, what should I do

    Just FYI,
    You are not addressing Apple here.
    People here who help troubleshoot and attempt to correctly answer technical questions in these Apple Support Communities are Apple users just like yourself.
    There are two initial things you can try.
    An NVRAM reset.
    Shut down your Mac.
    Locate the following keys on the keyboard: Command (⌘), Option, P, and R. You will need to hold these keys down simultaneously in step 4.
    Turn on the computer.
    Press and hold the Command-Option-P-R keys before the gray screen appears.
    Hold the keys down until the computer restarts and you hear the startup sound for the second time.
    Release the keys.
    After resetting NVRAM or PRAM, you may need to reconfigure your settings for speaker volume, screen resolution, startup disk selection, and time zone information. The logic board battery helps retain NVRAM/PRAM settings when your computer is shut down.
    IF this fails to help reboot your iMac, you could try an SMC reset.
    Shut down the computer.
    Unplug the computer's power cord.
    Wait fifteen seconds.
    Attach the computer's power cord.
    Wait five seconds, then press the power button to turn on the computer.
    Check back if neither one of these solves your iMac's issues.

  • My iMac will not turn on, the screen stays black, makes a whistling sound 3 short, 3 long, 3 short, well maintained while keeping on, what solution do you have?

    My iMac will not turn on, the screen stays black, makes a whistling sound 3 short, 3 long, 3 short, well maintained while keeping on, what solution do you have?

    For some reason its firmware seems to have been corrupted. Read:
    About the Firmware Restoration CD (Intel-based Macs)
    iMac (Mid 2007) and later models: About startup tones

  • I'm getting an error message on Windows 8.  Missing apple application support.  Itunes will not install.  Please help!!, I'm getting an error message on Windows 8.  Missing apple application support.  Itunes will not install.  Please help!!

    I'm getting an error message on Windows 8.  Missing apple application support.  Itunes will not install.  Please help!!, I'm getting an error message on Windows 8.  Missing apple application support.  Itunes will not install.  Please help!!

    You probably need to either uninstall and reinstall itunes or to download the apple application support by itself
    you can download the itunes http://www.apple.com/itunes/ here
    then to do a complete uninstall / reinstall follow these instructions http://support.apple.com/kb/ht1923
    you could also use 7zip to extract the individual installer for apple application support from the itunes setup file http://www.7-zip.org

  • My purchased music will not play on any of my devices.  It is there but it will not play.  Please help.

    My purchased music will not play on any of my devices.  It is there but it will not play.  Please help.

    Try deleting and redownloading the music.
    Downloading past purchases from the App Store, iBookstore, and iTunes Store

  • I need to create a second back-up of iPhoto from Time Machine to a separate external drive.  The old iPhoto in TM will not open.  Please help!

    I need to create a second back-up of iPhoto from Time Machine to a separate external drive.  The old iPhoto in TM will not open.  Please help!  And thank you!

    Most Simple Back Up:
    Drag the iPhoto Library from your Pictures Folder to another Disk. This will make a copy on that disk.
    Slightly more complex: Use an app that will do incremental back ups. This is a very good way to work. The first time you run the back up the app will make a complete copy of the Library. Thereafter it will update the back up with the changes you have made. That makes subsequent back ups much faster. Many of these apps also have scheduling capabilities: So set it up and it will do the back up automatically.
    Example of such apps: Chronosync - but there are many others. Search on MacUpdate or the App Store

Maybe you are looking for

  • Some layers in Photoshop cannot be seen, is this a buffering problem?

    Some layers in Photoshop cannot be seen, is this a buffering problem?

  • ICal alarm sound

    My iCal alarm works except there is no sound. Just the alarm window with a pulsating alarm clock. Any suggestions? Thanks

  • IDOCs  ALE

    hi pro's well we are mapping this scenario can u please help me .. like we are getting the stock from japan to india as a intercompany sale . ok now both are distributed systems. so in this process order is done at india ( va01 ) . then transfered to

  • RAC + oratab + sqlplus

    This one should be simple, I'v searched online and just can't seem to find a solid answer for this. After installing a database with dbca on a 2 node Rac cluster, (db_name = SEED, instances = SEED1, SEED2), I'm left with this in /etc/oratab SEED:/u01

  • Solution manager 7.1 Service desk can be used for multiple customers

    Dear all, Please help  me on the below situation we have configured solution  manager 7.1 service desk for one customer , if we have  2 to 3 customers is it possible to use the same service desk we have 900 ume client has give to customer A here he c