PowerPC :: Using G4 400mhz - Red Light On Motherboard
Jul 26, 2007
I bought 4 G4 towers of eBay for �85.. none have Hdd's so havent tried them out yet (two also have no graphic cards) I got a mix of ram size and speed (pc100/pc133) however thats not my question
Next to the ram slots theres a red light that comes on, is this normal? I've tried to do some research on it and some people say it is, others say it isnt.
I plan to sell them off again on ebay but I did it mainly as a project to keep the G4's alive. Any suggestions on graphic cards (cheap ones too)?
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Feb 17, 2007
I have a G4 powermac 400 mhz with os panther 10.3.9 installed Can this G4 be upgraded to Tiger and if so which version.There seems to be many versions of tiger ie some say amd or intel etc If i can upgrade which version should i look for
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Apr 25, 2010
I running a 400MHz sawtooth Family #M5183 my friend gave me with a 40 gig hard drive running OSX 10.3.9. I just picked up at the swap meet a Qwicksilver Model No.M849 PNG4 1GHZ DP/2M CACHE/512MB SDRAM? 80GB HD DVD-R/CDRW/Nv17 DUAL/56k MDM/GIGE it is missing the HD from under the superdrive can I just plug in the HD from my Sawtooth and run her? She still has the HD in the bottom its a 80 gig IBM Deskstar. When I opened my Sawtooth I found that there is a Seagate Cheetah model#*ST118202LW* Its not even plugged in!!! How many gigs is it and can i run it for more space? I have three 512 cards for memory. Can I use the video card from the sawtooth to run a second monitor? If this all works whats the newest operating system I can run? As soon as I get the money I am going to swap the processor and bring her up to speed. I am a singer/songwriter on a budget trying to put my studio together,I run live sound and make Hand Drums.I'm not a computer tech by no means but I do ok running a mouse to get a good sound. If you are going to tell me to wrap machine in tin foil and put it in the freezer PLEASE don't waste my time!!!!! I just want to build my machine correctly and not f@#$ anything up.
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Sep 20, 2010
I want to do this to increase the speed of my sawtooth. I think that the dual 500mhz was the last apple processor that is compatible with the sawtooth because they both run on 100mhz busses, correct?
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Dec 27, 2006
I just restored an old 1999 G3 iMac DV 400MHZ with slot-drive from the dead, and I feel it lacks a bit of power under it's hood. I already put RAM and HDD but the computing power is just not enough. What I want to do is go into OpenFirmware and speed up the cpu and possibly the bus, I remember doing so on my sawtooth but I can't find the code plus that was a G4 and now I have a G3. I also found this page [URL] that shows how to mechanicaly overclock up to 1GHZ but I want to be able to do it non physical if possible. I know this isn't the hot topic now a days but maybe some of you will remember what they used to do and feel some nostalgia(is that a propper word?).
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Apr 16, 2007
I have a G4 PowerMac 400Mhz running OS 10.4.8. The graphics seem a bit slow at times and I was wondering if upgrading the video card from the current ATI 16MB to a GeForce2 32MB would help? I have 1GB of memory so I know I am good there.
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Nov 14, 2007
Today I was planning to build in a second harddrive into my old G4 tower. So I did this. But after installing the system won't boot anymore from the OS X Tiger partition. I have tried all sorts of jumper settings, from slave to master to cable select. All without success.
When I boot from the Tiger installation CD diskutility does not even recognize my original master drive nor does it recognize the new slave drive. I even tried to boot from an old OS9 disk to initialize the disk. I tried formatting it in another machine to HFS Journaled, no success in booting mounting the disk whatsoever.
I recently added some extra RAM's but i doubt these are the problem since my machine DOES boot without having the new disk installed in the system.
It is a 60GB Maxtor drive, so it is within the maximum amount of GB's possible for these older machines.
[URL]
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Mar 10, 2009
Just installed one of the original airport cards in this machine, and though all indications are that it is working correctly, it doesn't see the USR wireless router sitting 10 feet from it. No networks show up in the dropdown list, and manually adding does nothing. Encryption is a simple MAC filter (this card has already been added), and SSID is broadcast. Did I get a bad card? System profiler seems to think it's fine.
It's an original airport card.
Computer's a G3 400 Mhz iMac.
A G3 300 Mhz iBook with original airport card is having no troubles.
Firmware of Airport card is 9.52
Firware of router is up to date.
OSX 10.3.9
All help greatly appreciated; this is my moms little computer, and we're trying to rearrange and loose some wires.
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Mar 24, 2010
I found one on craigslist for $15 but want to make sure it will work, or if I do get it and try to install it I want to make sure I don't break my computer.
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Jul 14, 2007
can you make this: fit where thisis? fitting g3 motherboard?
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Jun 24, 2008
I was recently given a non working G5 dual 2.5ghz machine. It is a quad core machine with the Delphi liquid cooling system. After some investigating I found it had a coolant leak. All the fans and lights come on as well as the bootup �chime�. I think (hoping) that the motherboard and power supply are still good. My question is this:
Can I use different processors on this motherboard? Lets say a dual 2.5ghz non-quad core processor assembly. Am I making sense? I am very new to the Mac world and would appreciate any help on this issue.
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Nov 24, 2010
I have Powermac G4 AGP (M7628LL/A) that has the AGP slot without the 'power-supplying' tab at the front of the slot. Therefore my NVIDIA GeForce2 MX video card (ADC/VGA) will only enable me to use the VGA outlet, and not the ADC. I have two Studio Display Monitors (M7649) and cannot use them.
I need to know (1) What other monitors will work with this G4 (in case I cannot fulfill #2), and most importantly (2) Which motherboard can I replace this one with that will enable me to use the video card in it's fullest?
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Sep 15, 2007
I'm looking into replacing a motherboard on my newphews iBook G4. It's an early 2004 Series. I'm wondering if these Ibooks have interchangable motherboards, i.e. 1.0ghz vs 1.2ghz, 12inch screen vs the 14inch screen. I've done much work on IBM compatible laptops and these interchange pretty easily...but these MAC's are all new to me. I'm looking to get a busted up one off ebay and replace it for him for pretty cheap...
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May 22, 2008
Ok, my problem is as the title states. Why is this happening? My motherboard had 8gb slots and is compatable with 8gb ram. I installed 8 dimms of this ram I bought from newegg: [URL]
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Dec 15, 2008
Is it possible to upgrade the mac mini g4 to a intel processor or some other processor thats faster? Or motherboard upgrades? Well i appericate the help, and i hope there is an upgrade
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Jun 18, 2007
Anyone know? And if there is one where it is? Also: can the motherboard be reset using software?
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Mar 7, 2008
Recently I didn't do my research, and I purchased a Quicksilver power supply to put on a Gigabit machine. I noticed it had four extra pins which look like some of the ones they use to power processors in some PCs (tho I've come to find this is for the ADC port). I dug a little deeper (Googled "powermac_g4.pdf") and found out that some of the pins have differences between the Gigabit PS and the Quicksilver PS.
Has anyone else had an experience like this? Will the PS work without any wirecutting or do I need to get a new one?
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Oct 2, 2009
I have a replacement motherboard (G4 MDD 1.25 dual) coming in and even though I have a very talented and technical friend coming by to help, it'd sure be nice to have some instructions on removing the current motherboard and the subsequent install of the newer one. Mine is having kernel panics about 98% of the time on attempted startups and I've tried (along with the Apple Store Genius Bar) everything I know how to do or have Googled and read. I think it's perhaps a USB bus issue.
I did manage to get it to boot from the Apple Hardware Test and everything passed. And, one of the USB connectors on the back of the machine is damaged, so I figure a complete motherboard swap should eliminate all possibilities except for maybe the CPU which seemed to pass. So back to the original query. Are there docs somewhere to guide one in the removal of the motherboard? I run a recording studio with this machine and I'm dead in the water! I am looking into either a new MacIntel or possibly a used G5 to replace it with.
G4 dual 1.25 MDD Mac OS X (10.4.11) Recording Studio
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May 26, 2008
My former, babied, 400mhz overclocked by Daystar to 550mhz Titanium Powerbook has a fried logic board. Can I put a the old low resolution Tibook screen on a 1ghz Tibook body with a higher resolution screen?
Would it just power on at the lower resolution or is this just idiotic?
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Nov 17, 2006
While taking apart ibook to replace harddrive on grapghite 466 , I ran into trouble. In taking out the backlight cable, the whole plastic receptor (little white plasatic at J4) on the motherboard came off as well. This is a little part (1/4 x 1/8inch). I can't tell if it was soldered on or just slips on the motheboard since tiny bits of plastic broke off. Can someone tell me if/how this can be repaired.
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Nov 30, 2010
Up until recently my PowerMac G5 has performed as it should for a computer its age. About two nights ago it shut itself down and I haven't been able to turn it on since. Power does cycle through the unit because all the fans will either cycle once or twice, or at the very least they will twitch. And now there's a tiny red LED on the motherboard and behind the power button that lights up whenever I try to power on the computer. I'm at a loss for where I need to go from here, though I feel rather certain that my computer has simply passed on. It's an original 2004 1.6 ghz single processor PowerMac G5, serial number unknown, since I can't turn it on.
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May 7, 2005
I had an iBook, now I have a powerbook. Both have the feature when I shut the computers and they are in sleep mode, the light goes from dim to bright to dim to bright..... It drives me nuts. I have to put my computer in a drawer or cover it up at night. Does anyone know how to turn the light off? or have it be constant? Is there a download that fixes it?
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Feb 20, 2007
Is there a way to turn on the light in the keyboard even if there is enough light to keep it off?
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Apr 20, 2008
My keyboard won't light up anymore - I am in a dark room, with all lights out - no light up keys.
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Dec 6, 2008
[URL] I went here. I have found out the iMac is a 2nd gen iMac G5. It has an ambient light sensor. I put my hand over it and it doesn't appear to actually do anything.
What is it supposed to do?
Do new ones have it? I have a 20" aluminum one as well, but don't see a sensor.
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Aug 10, 2009
My powerbook G4 has a button thats used to unhinge the LCD screen and flip the computer open. When I flip it open, the light turns on, but it should be off. If I pull the LCD screen forward as if I am going to close the screen, the light turns off as I am pulling the screen forward. As soon as I stop the motion, the power light goes back on. Its very odd.
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Oct 28, 2009
So I've done all I can find on the internet on helping my broken computer. It used to have the noisy fan issue and then it would shut off. Now after being off for 12 hours, it may shut off in 2 minutes, maybe in 30. I have reset the SMU by unplugging for 10 seconds and then plugging in while simultaneously holding the power button, then turning it on. Ive also reset the PRAM, but it still seems to shut off. Is it a bad power supply? I dont ever hear the fans blowing hard anymore.
If anyone has basic things to do, I'm all ears. I know last step is probably just reinstall OSX.
I'm on 10.4 right now.
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Apr 2, 2007
I have an ibook G4 (2years old, a part of the battery swap program) that charges normally... for about twenty minutes. Then the light around the charger turns from it's normal "i'm charging" orange to nothing, the light goes out and the ibook switches to battery power. I've just inspected the power chord and there are no strains or tears, the plug at both ends are in good condition and the ibook power socket is fine too.
I've turned the ibook off for a period of time (two days) and reset the power manager... still no difference. The ibook looks and acts just like it should until about twenty minutes into the charge then the light turns off and it's like it's been disconnected. The chord is in correctly, i've even tried the apple extension chord = no joy. If i reconnect the power chord at the wall it's fine, starts charging again... and yes i've tried different sockets on different circuits in the house!
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Aug 29, 2007
I searched forums etc. I have a 867 12" powerbook. The problem is that it will not turn on at all. I took the battery out and pressed a few key and it worked for a little while. Now when I plug it up to recharge the light goes green to red then off. I found a so called reset button on the apple site and lifted the keyboard and it is not in site.
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Jan 23, 2008
I've got a G4 iBook that came in because the user thought the battery was dead. I tried the usual fixes, PMU, NVRAM, PRAM, different power adapter, etc. When I ran some tests (Coconut Battery) to see if the above worked, I found that the problem wasn't the battery (it still has 3888 mAh out of 4400). The symptom: The AC light alternates between green and amber even though the battery is only at 18% charge. It will stay amber for about 45 seconds then switch to green, vice-versa. It has been plugged in now for 2 hours + and has gone from 16% to 18%, so it does seem to be charging. I have adjusted the power saver so that the machine doesn't go to sleep or have the display dim as I thought sleep mode may have something to do with it.
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