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Firewire ports malfunction

I cannot access any of my firewire ports on my power mac g5 funning 10.4.11.

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Re: firewire ports malfunction

Boot the machine from external hard drive with known good OS installed.
If issue persists then, then logic board has issue.

Posted on Dec 14, 2007

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Best thing you can do is to determine whether its the port or the camera.
If you go to the Apple in the upper-left corner, and go to "About this Mac", then click "More information", it will start System Profiler. On the left side, under "Hardware", click on "Firewire" and see if your iSight shows up. If you have another FireWire device, plug it in, and see if it shows up there as well. The solution could just be a dead iSight (hopefully!). The worst case scenario is a dead FireWire bus...
If you have a dead iSight, I'd guess that ebay would be your best resource at this point. If its a dead bus, I'm afraid it won't be terribly cost effective to fix it :-/

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The only thing I have found that will work with these speakers is called the Griffin iFire. It use a firewire port on your mac to power the speakers and has a normal mini plug on the end of it. However, saying this they are not readily available you may be able to pick them up on ebay or another auction site at some point. An review of the iFire can be found at

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Try unplugging all Firewire/USB devices. Also, unplug the power cord from the computer. This resets the logic board. If that doesn't isolate the problem, put your Original system CD that came with the computer and hold down the C key. Boot up and run Disk Utility. Run the repair disk and then repair disk permissions. Reboot and try booting your system again.

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You need to determine whether the problem is at the disk interface or at the computer interface. Will the drive mount on ANOTHER machine using FireWire? Will your computer mount ANOTHER device using FireWire? This will tell you which machine is at fault. It's not unheard of for the FireWire channels in a Mac to just go bad, and (unless it is a Mac Pro) it typically requires a logic board replacement to address. For a G5, this would not be cost-effective. On the other hand, as I say, it could just be a bad interface in the drive itself. It's up to you to determine which it is.

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G5 dual processor keyboard freezes for 10 seconds or so

you might need to check the usb connections for the keyboard and mouse. and see if they are correctly connected, also to clean the connections with a q-tip from time to time. Also you might want to switch to another usb port. to narrow down the issue. Because if say you change to another port and it still persists, even when running a usb hub with external power, and even a external firewire hub with usb connection then the issue would be the com board for the usb and firewire. and hopefully the G5's usb, firewire ports are on a separate board that is then ribbon wired to the main board. because if its just ports ribboned to the main board you will need to get a new logic board. and that is not cheap. unless you still have your applecare. then just take it in to get replaced.

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There is a place under your apple that says about this mac.
Click there.
THen on the bottom of that window it will say more about this mac, click there.
THen go to your contents window and look under hardware. There you will see a file named "firewire". Click on it. If you see information under the area Fire wire Bus than your fire wire bus is working and the problem is your cable from the computer to the Drive. If you do not see any information there or something that says, "Firewire bus not connected or unavailable than that part of your card is messed up on *********** board. If it is not the cable and your machine is under warranty, take it to an apple store and have them replace the board. (Back up your important data first!)
The simple solution with out having to have your machine repaired is to buy a PCI Fire wire card and install that. You should have a separate connection on the front of the mac that is different and check to see if this one is not working either with a new cable.

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i think you blown your fire wire port,try something else in those ports and see if they work..

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Any other questions?..keep me posted.

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