Mysterious red LED light inside my G4

Could someone tell me what the red light means on the inside of my G4?
It can't be seen from the outside.
I am having a problem with my firewire ports not working. Is this a warning or alert of some kind?
Help! I really looked and can't find this info anywhere!

From the G4 Service Manual:
Logic Board LEDs: Power Mac G4 (AGP Graphics)
There is one red LED on the Power Mac G4 (AGP Graphics) logic
board. It indicates that there is power to the board and does not imply a fault condition. Hardware such as DIMMs and PCI cards should not be installed or removed when the LED is on.
Cheers, Tom

Similar Messages

  • My bb curve 9380 shutdown and a red led lighting

     my bb curve 9380 shutdown and a red led lighting i don't now what hapned but i just modify some apps bay bb desktop softwere please help me and thx verry much

    Hi and Welcome to the Community!
    Please try this sequence...note that, throughout the entire 4h15m process, your BB must remain connected to a known-good wall charger (not PC USB):
    With the battery inside, connect your BB to the wall charger
    Leave it alone for 2 hours, no matter what the LED or the display does
    Remove the battery
    Wait 15 minutes
    Insert the battery
    Wait another 2 hours, no matter what the LED or the display does
    This has been known to "kick start" some BBs.
    It is also possible that your battery or BB has experienced a problem...to test, this sequence is needed:
    Obtain an known good and already fully charged additional battery...use it in your BB and see what happens
    Obtain access to a known good and identical BB...use your battery in it and see what happens
    The results of this will indicate if it's your BB or your battery that has the problem.
    If the problem is revealed via the above tests to be your BB, then I recommend that you attempt to boot into Safe Mode:
    KB17877 How to start a BlackBerry smartphone in Safe Mode
    It may take you multiple attempts to get the ESC key sequence (press/release/hold) correct, so be patient. When successfully into Safe Mode, see what happens.
    If the behavior ceases, then think carefully...what happened just before this behavior started? A new app? An update? A Theme? Something else? Think carefully as the smallest change could be causal...and attempt to undo whatever that was.
    But if the behavior continues in Safe Mode, then you may need to consider more drastic actions -- WIPE, OS Reload, BBSAK Wipe/Reload, and the "Bare Bones" OS Reload Process. To prepare, you should be sure that you have a full backup to your PC...please review the Backup link in my auto-sig on this post for instructions.
    You may also need the use of these tricks:
    KB10144 How to force the detection of the BlackBerry smartphone using Application Loader
    KB27956 How to recover a BlackBerry smartphone from any state
    http://crackberry.com/blackberry-101-lecture-12-how-reload-operating-system-nuked-blackberry
    Good luck and let us know!
    Occam's Razor nearly always applies when troubleshooting technology issues!
    If anyone has been helpful to you, please show your appreciation by clicking the button inside of their post. Please click here and read, along with the threads to which it links, for helpful information to guide you as you proceed. I always recommend that you treat your BlackBerry like any other computing device, including using a regular backup schedule...click here for an article with instructions.
    Join our BBM Channels
    BSCF General Channel
    PIN: C0001B7B4   Display/Scan Bar Code
    Knowledge Base Updates
    PIN: C0005A9AA   Display/Scan Bar Code

  • Turn red LED light off

    Is there an option or registry edit that will turn off the red led light that dots the "i" in ThinkPad on the top of the laptop? I have a SL500.

    Hi adoman,
    I suggest putting following sticker on it, you'll never notice it's there:- http://cgi.ebay.com/Original-IBM-Lenovo-Sticker-11​-x-30mm-127_W0QQitemZ350223067619QQcmdZViewItemQQp​...
    Hope it helps.
    Maliha (I don't work for lenovo)
    ThinkPads:- T400[Win 7], T60[Win 7], IBM 240[Win XP]
    IdeaPad: U350
    Apple:- Macbook Air [Snow Leopard]
    Did someone help you today? Compliment them with a Kudos!
    Was your question answered today? Mark it as an Accepted Solution! 
      Lenovo Deutsche Community     Lenovo Comunidad en Español 
    Visit my YouTube Channel

  • BlackBerry Z3 does not Boot, red LED Light is flashing 1x long and after 6x short

    After updating my Blackbery Z3 to 10.3.1.1779, my device won't boot and  red LED Light is flashing 1x long and after 6x short. Need help to solve the issue. Thanks in advance.

    Thank you for your update.
    1. If any post helps you please click the below the post(s) that helped you.
    2. Please resolve your thread by marking the post "Solution?" which solved it for you!
    3. Install free BlackBerry Protect today for backups of contacts and data.
    4. Guide to Unlocking your BlackBerry & Unlock Codes
    Join our BBM Channels (Beta)
    BlackBerry Support Forums Channel
    PIN: C0001B7B4   Display/Scan Bar Code
    Knowledge Base Updates
    PIN: C0005A9AA   Display/Scan Bar Code

  • Red Led Light

    Hi, I have bought this laptop which is fairly new, just under a year. Although now, there is an red Led light on the side of my laptop when I plug in my Ac Adaptor to charge the battery and it is not going. The Led Light was always a bright white light but now it just stays red and I dont know why? Is there a problem with my laptop? because it is working fine. I dont know how to solve the red led light or what it means. I hope I can get some information about this. Thank You.

    jpdvid-
    Did you try starting the Mac back up after installing the RAM and before installing the card? Many times a PMU reset is needed after RAM is installed.
    Which model of Rocket Raid card are you installing?
    Luck-
    -DaddyPaycheck

  • Red LED Light Remains On

    The battery is fully charged and disconnected from charger.  When hibernating, the red LED light constantly remains on.  When the phone is being used, the red LED light does not appear.
    What is wrong? How can this be fixed?  Thanks much for help.

    I'm a total newbie to smartphones.  Based on your question, I cleared all the Notifications and the red LED disappeared.  Then sent myself an email to test the blue LED light and it is now blinking.  So, the problem might be solved but don;t know why the red LED constantly displayed after charging the battering to 100%.  
    Don't know about Lightflow!
    Thanks

  • HELP! BB Pearl 8130. Solid Red Led Light. Won't go away.. HELP!

    My LED has turned a solid Red color. It's on all the time and is only off when I pull the battery out. My phone does still charge. I've done everything to get rid of it even wiping my blackberry and upgrading the software. I read something about Blackberry Music Gateway? I do use my pearl to listen to Pandora everyday and iheart radio with a 3.5 cable that plugs into the dash of my truck, but it never did this before. Any help would be greatly appreciated!
    Thanks!
    Justin

    Justin, so you've wiped the device completely and reloaded a new OS... still does the same. Anytime the BlackBerry is powerd on, the LED lights up RED?
    1. If any post helps you please click the below the post(s) that helped you.
    2. Please resolve your thread by marking the post "Solution?" which solved it for you!
    3. Install free BlackBerry Protect today for backups of contacts and data.
    4. Guide to Unlocking your BlackBerry & Unlock Codes
    Join our BBM Channels (Beta)
    BlackBerry Support Forums Channel
    PIN: C0001B7B4   Display/Scan Bar Code
    Knowledge Base Updates
    PIN: C0005A9AA   Display/Scan Bar Code

  • 4 Red Led Lights - Please help

    the other day I left my computer on for a few hours and when I came home and moved the mouse it wouldn't come out of standby.  To get it to shut off, I had to hold the power button down.  Now when I start it, the fans start spinning, the DVD drive spins for a second and a few times the orange light on the monitor turned green.  But after about 10 seconds, it shuts down.
    I have the 4 red lights on the LED, so I swapped in a new PS - Enermax 550W with 36A on the 12v.  Still same thing.  So I'm guessing either the CPU or the board.  I built this about 6 months ago.  It's not overclocked and it was idle during the time I left it.  Any suggestions?

    Yes and no. I know that is confussing. However go to this first as you may have had a problem right along and did not know it nor would you without testing.  Memtest86 is a great way to test memory. The no part is that it could be something else. But hey you have to start somewhere.
    As for the timings in RAM you need to go to Corsairs page and check the exact model on their charts. Also be sure to read any side notes as they may have specific timings for your A64 versus other CPU's. It can be different as the memory controller is on the CPU in our case instead of on the MB.
    Corsair also has tech support that can walk you through memory timings if you don't follow them at all.
    You can also have some other thing in the system that went bad even as simple as a HDD cable that came loose. To troubleshoot sometimes the easiest way to find out is to unplug anything that is not needed to boot.
    But start with the memory as the 4 Red LED's indicate.

  • Playbook will not charge, no red LED light

    The Battery charge said 3%. I turned off the playbook and plugged it in and left it to charge with the LED lights  showing. I went to retrieve it, only to find out it's not turning on. No red light appeared. nothing. I went and  plugged it in and then tried turning it on  Nothing.No red light...just dead.  PS: I just got the Playbook from relative without the manual and all so i'm not sure about the DO's and DON"T's of using the tablet.  Please help!!!  Thanks in Advance. 

    Your battery is dead. http://www.blackberry.com/btsc/KB27705
    Try this:
    Connect the charger that came with the PlayBook and plug it into the wall. Hold down the Power Button only for 20 seconds. Leave it for 4 minutes, then unplug at the wall, wait a minute, plug it back in again, hold down the Power Button only for 20 seconds.
    Repeat this process about 10 times and hopefully, your PlayBook should go into a high charging rate. Leave it plugged in overnight and you should have a full charge by morning.
    1. Please thank those who help you by clicking the "Like" button at the bottom of the post that helped you.
    2. If your issue has been solved, please resolve it by marking the post "Solution?" which solved it for you!

  • BlackBerry Curve 9380 will not power ON and the red LED light is flashing

    I need you guy's help. I was charging my BlackBerry Curve 9380 this morning. When I was about to use it the found out that the screen will not light up but the red led indicator is blinking one long blink, one ong blink then a full stop. I have already tried removing the battery and sim card for sometime but to no avail. What should I do?!

    You need to consider updating/reinstalling device OS. Check the below knowledge base article -
    KB03621 How to clean reload BlackBerry Device software and applications using BlackBerry Desktop Software
    tanzim                                                                                  
    If your query is resolved then please click on “Accept as Solution”
    Click on the LIKE on the bottom right if the post deserves credit

  • Sony Xperia M2 flashing Red LED light and wont turn on.

    Okay so i have been having this problem for about a week.I tried turning on my phone the other day but it wasnt doing that so i thought maybe it ran out of battery then i let i charge for a couple of hours and left it untouched.When i came back my phone was flashing a red light and the sony logo would apear and my phone would vibrate but then it would shut down again.This has been happening for all week i let it charge overnight but still the same thing happens flashing red and vibrating.Sometimes the light dosent flash and i can turn my phone on for a while but i never know when it could randomly shut down.i tried using the Pc companion program to try and fix it but my phone wont stay on for long enough for it to be able to do that.Any tips on what i could do ? the last thing i wanna do right now is call sony so please if you know any possible way of fixing this let me know

    Hi and welcome to the community! Since you're new please be sure that you have checked out our Discussion guidelines.
    Have you tried to power on the phone without SIM- and/or SD-card to see if this can help? Otherwise, a software repair via PC Companion would be recommeded:
    http://support.sonymobile.com/global-en/tools/pc-companion/
    In PC Companion you press start on Support Zone > Start on Update the phone/tablet software > Repair phone/tablet (the blue clickable link in the message) > Follow these steps without having your device connected to the PC.
    Follow the instruction that appears in the program and do not connect your device until this guide tells you how to connect it. When you are going to connect the phone, the phone should be completely off. Hold the ON/OFF button + volume up(+) for 10 seconds.

  • What happen on my 4GS screen display.all the app are diappear and have the  background of the LED light inside the screen.can't see anything just only the line black and blue light

    I JUST HAD  A PROBLEM WITH MY IPHONE "4GS".THE SCREEN DISPLAY ARE BLANK.ALL THE APP ITS GONE.JUST HAVE ONLY "BLACK AND BLUE LINE"INSIDE THE SCREEN.ALL THE PHONE FUNCTION STILL ABLE TO RECIVED THE CALL BUT UNABLE TO MAKE PHONE CALL BECAUSE THE TAP ICON ARE GONE.

    Not sure what the origin of the problem is, but you should try deleting iDVD's preference files.
    First, close iDVD and go to your Home(YourUserName)/Library/Preferences/com.apple.idvd.plist
    Drag this plist file to the trash. iDVD will automatically create a new fresh one when you reopen it.
    Open iDVD.
    See if the main screen is now visible.
    Post back if that did not help.

  • Red LED inside Mac Pro...

    So I have this issue with constantly having to unplug my Mac Pro from my UPS and hold the power button to reset it so that it boots up with Bluetooth so I can use my mouse.  I notice that there is a red LED glowing inside the Mac Pro on a card and it doesn't quit even after I unplug the system to reset it.  Is this how I have to keep powering up for the rest of the time I own this 2.8Ghz Quad core?  Seems so annoying.  Anybody know what I'm talking about?  "Do you know of what I speak..."

    y'know - I thought my details were under my post, I might be thinking of another forum, but good questions!  I am talking about my 2010 2.8Ghz Quad-Core Intel Xeon "Nehalem" Mac Pro, 8GB (4x2GB) 1066MHz DDR3 ECC memory, 1TB SATA HD, ATI Radeon HD 5770, (driving two Dell 23" UltraSharp 1920x1080 displays via miniDisplayPort to DisplayPort).
    I am on Snow Leopard OSX 10.6.8, running FCS2.  I have a hardware RAID card running a CalDigit HDElement, and I shoot on XDCAM EX and 5DmkII in terms of video rpoduction except when I also pull in some ProRes files shot on XDCAM HD and DVCPRO HD.  At work (my full-time) I am on a 3GHz Dual Quad-Core running Snow Leopard and FCS2, and we use a 16TB SAS RAID also with a hardware card all from DAT Optics.  I've been cutting on mac's for almost 20 years or more and very familliar with the side panel, the ram slots, the hardware and the apps.  (not to sound experienced, but just so you know where I'm coming from).
    I'm still at work, and my Mac Pro is newer than the one I'm cutting on here at Keystone, so I can't tell you yet what the marking is next to the persistant red LED light, but I will later on tonight or tomorrow.
    Thanks for any help.  -s

  • Aironet 1242 seems dead - just a light red led status

    Hello,
    For an Aironet 1242 who's no more covered with a SMARTnet contract.
    Symptoms are the same whatever power-injector, power supply or via PoE switch.
    Just one led.
    A permanent red led (light red) on the status, nothing else.
    No reaction on the console port.
    Is that device dead ?

    Hi
    With symptoms looks like device is dead and needs to be replaced.
    Regards,
    Akash

  • S750: control pod flashing red led READ AND HELP!

    Hi, basically my S750 set of speakers isnt working correctly. When im listening to music and start to pump the voloume up it just stops and the control pod goes back to standy mode with the red led light. Sometime it keeps flashing and I can hear a clicking noise coming from the sub, when the control pod was flashing and the sub was making a clicking noise i looked at the back and saw the green light flickering. Can anybody help me please

    I did thing is its really a lot of hassle. Im based in England, and I need to call a number in dublin (International call) and then pay 6.75 to a 'tutoring session' which will last 30 minutes. That's why I was trying to resolve my problem on here, they don't even know what it could be either. I have dropped my control pod a few times on the floor, so i don't know if it could be faulty now, like a wire may have come loose inside,but then that doesn't explain when i try and play fall power it all cuts out,what do you think?

Maybe you are looking for