Isight g5 external stops working

My isight just stopped working. tried everything but no luck.
i have a imac g5, external isight. my isight works fine on my old g4.
on the g5 it is not recognized in the system profiler, but the firewire port works, as i can see my ipod and ext. hard drive there. tried changing cables, no luck.
was working about one month ago.
dont know what else to try.
tried standard restarsts, and disk clean up etc.
please help.
imac Mac OS X (10.4.8)

Hello, drmonaco,
my fire wire ports recognize my other peripherals but not... seen easily in system profiler.
Your iSight works correctly on your old G4 and is recognized by your G4's System Profiler. I find it amazing that it could NOT be recognized when connected via your G5 ports that work with all other Firewire devices.
Recheck to see if you have missed any of the suggestions (following or already made.)
does changing my modem effect it?
If your iSight has worked properly at some time after you configured your new modem, I would think you can rule out modem issues. At any rate, I wouldn't think the new modem and configuration could have anything to do with your G5 iMac's System Profiler not recognizing your iSight.
i have no other ideas.
To use any external USB camera with iChat AV, you need to add iChatUSBCam. (Check their "camera guide" to be sure your camera is supported.)
Trying the USB camera might have damaged the camera info in your iChat preferences files. To rule that out, quit iChat if it is running. Then delete the " com.apple.ichat.plist" file from your Home/Library/Preferences folder. Restarting iChat rebuilds default .plists for any that are missing. However, when you restart iChat, you will need to be reset some of your iChat preferences (the ones that are stored in the file that was deleted.)
Having already applied the 10.4.8 Combo Updater and and possible conflicts, if your problem persists, consider any other relevant suggestions from Apple's Tech Article titled iSight: How to Troubleshoot that you may have missed.
Your thorough testing has clearly ruled out your iSight as the cause of the problem. If you are using the same iSight Firewire cable on both your working G4 and the iMac G5 that has problems, you can also rule out the Firewire cable.
i cant seem to check it in another program... rec. the isight.
I understand that you will not be able to test your iSight at all until you can get System Profiler to recognize it. That is why we concentrated on System Profiler recognition in my previous post.
If your iSight is still not recognized by your System Profiler after all this, unless you have new information, the only suggestion I nave left is to take your iMac, your external iSight, and your Firewire cable to an Apple-Authorized Service Provider for professional check.
Jim
Mac OS X (10.4.8) G5 DP 1.8 External iSight

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dcunited001 wrote: ... Just wondering why this happens? ...
Because something is wrong.
dcunited001 wrote: ... Is there something I could do to prevent this from happening again? ...
One of the following will fix it.
(0) If you need help with the following suggestions,
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Message was edited by: EZ Jim
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Message was edited by: Yashper

Welcome to Apple Discussions, Yashper
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... MODERATOR PLEASE HELP!!
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Stopped working
Date
4/19/2014 9:38 PM
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Problem signature
Problem Event Name:      APPCRASH
Application Name:           iTunes.exe
Application Version:         11.1.5.5
Application Timestamp:   53073d6a
Fault Module Name:        ntdll.dll
Fault Module Version:      6.0.6000.16386
Fault Module Timestamp:                4549bdc9
Exception Code:                c0000005
Exception Offset:              00062086
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Locale ID:           1033
Additional Information 1:                8d13
Additional Information 2:                cdca9b1d21d12b77d84f02df48e34311
Additional Information 3:                8d13
Additional Information 4:                cdca9b1d21d12b77d84f02df48e34311
Extra information about the problem
Bucket ID:          95851104
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