Flaky Firewire bus after bad crash

I had a really bad crash last week while working in FCP (slow beachball then a total freeze). I had an AJA IOHD attached to the rear FW800 port; for those not in the know, that's a self-powered video I/O box for capture and playback that uses FW instead of a PCI slot. It takes over the WHOLE FW bus when you use it, can't even have a hard drive plugged in or it freaks out. Anyway, after the crash the IOHD was acting weird, would freeze the computer whenever FCP was launched. I reinstalled the drivers and ran fsck in SU mode and got the machine back to the point it wouldn't freeze. But the IO was still being glitchy, kept going briefly 'offline' and dropping frames on playback.
The IOHD runs fine on my MacBook Pro. And, I just tried the front FW800 port on the Mac Pro and that works fine too. So the issue seems limited to the back FW800 port. What could I have done to it? It's not totally burned out, cuz a FW800 drive plugged in back there runs normally. But it just doesn't want to communicate with the IOHD properly now. Not sure if there's anything software-wise I can do to fix it; if it is a hardware repair, anyone know what a FW bus replacement runs? Or would they have to swap the motherboard? (and of course, my Applecare just ran out)
JK

Uggh, no good. It was doing fine after I reset the SMU, but while I was running video through the IOHD from FCP it started to drop frames again. Also, bits of digital static and noise all over the external monitor (connected via HDMI to IOHD) even though the footage itself is clean. The unit was not going online/offline at first but then FCP froze, and when I force quit it that behavior returned as well. FCP report just said "hang" as the cause of the problem. Similar flaky behavior (though not as bad) in Motion.
Anything else I should try before I declare that FW port borked? Reset the PRAM perhaps?
JK

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FireWire bus not responding

Subject says it all. At boot-up this morning, none of the FireWire devices are found. System profiler sees nothing on the FireWire Bus. Shutting down, rebooting, unplugging, plugging, powering down, powering up, all have no effect.

Thought you could use this info about getting FireWire to work!
First, you should always Repair Permissions in Disk Utility before and after any update; I would do that now. If you installed your update with FireWire plugged in, your Mac may not recognize it anymore.
Try resetting your FireWire ports by disconnecting all FW devices, shut down your Mac and unplug it from AC power (wall socket) for 30 minutes. plug it back in and try FW.
If that didn't work, download the combo update from this site (yours may be corrupt), not Software Update, disconnect all firewire + USB devices except keyboard + mouse, Repair Permissions, re-install update, Repair Permissions again + try. Yours is the 10.4.10 Combo update ( PPC, not for Intel systems). Others reading, download the Combo that applies to your system.
If that still didn't get it Zap the PRAM. While restarting Mac hold down the following key combo Command-Option-P-R. Keep holding those keys down till you hear the second start-up chime, then release.
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Here's another
Fw Faq.
 Cheers! DALE

Firewire bus stopped working

Hello
This afternoon my iMac G5 firewire stopped working. I was using seven firewire drives and one firewire audio interface a MOTU 896. I have used this config for about three months with no problems. I was in Reason and then I booted Logic pro (also used IAC rewire between the two programs before) that's when the fun started. Logic froze on mid-boot. Then reason locked up as well. At that point on reboot my iMac no longer saw any of my firewire devices.
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This appeared in MacFixIt yesterday:
+MacInTouch Reader+
+I have a three-year-old iMac G5 that had a problem since I bought it that I've only just got to the bottom of - its fans would start up (loudly) about thirty seconds after I shut it down. Nearly every time. I think I disabled it from going to sleep pretty soon after I got it, but I vaguely remember it not recovering from sleep and the fans coming on randomly. Eventually I also developed a power supply problem where the Mac wouldn't start up first time, and when it did start up would then switch itself off with no warning (replacing the power supply did fix that problem, at least).+
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+I just want to spread the word. It drove me insane for three years and now I'm finally happy. I know my particular, specific problem was weird and maybe quite rare, but if you're using a USB modem with your iMac, maybe borrow something different from a friend for a while and see if it helps.+
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Hello Appleheads,
Looking for some help if you have a spare moment.
I just purchased a Phonic Firefly 302 Plus audio interface, and even though it is supposed to be able to be powered by the firewire bus, I am unable to get it to work. The unit's power light does not come on at all, however when using the external power supply that is also supplied it does work. I have tested two firewire cables, 1 of which I know works.
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An interesting point has been raised to me though that has been discussed here: https://www.mhsecure.com/faq/index.php?action=artikel&cat=3&id=21&artlang=en&hig hlight=bus power
+The MacBook Pro models include protection circuitry to shut down the bus power when a device's inrush current amount violates a threshold. This issue affects the startup transient only, so you can power the MIO from its power supply to boot the box, then connect the FW to the computer, and remove the MIO power supply after it has joined the bus.+
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Problem with After Effects crashing machine when rendering

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i - Illl try to answer these bellow...
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Processor Speed: 3.5 GHz
Number of Processors: 1
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L2 Cache (per Core): 256 KB
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EFI Driver Version: 01.00.687
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DELL UP2414Q:
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New Quad G5 - 'unknown device' on Firewire Bus

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No Firewire bus?

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Try an Open Firmware reset:
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HT1338 anyone found a solution to firewire bus warning in 10.6.8

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What exactly is the warning message?
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Is it possible to Recover a document after InDesign crash?

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THANK YOU!!!!! Seems to work J
Best regards
Annette Gallas
Von: Dave Merchant [email protected]
Gesendet: Samstag, 20. Juli 2013 15:39
An: webhexe
Betreff: Cannot activate with my serial number after Harddisk crash
Re: Cannot activate with my serial number after Harddisk crash
created by Dave Merchant <http://forums.adobe.com/people/Dave+Merchant> in Dreamweaver CC - View the full discussion <http://forums.adobe.com/message/5522897#5522897

Flaky Firewire bus after bad crash

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