Frank, My apologies for the stupidity of my previous post. Not likely that you are using an Apple Pro Keyboard on a c600. (should have read further back in the thread)
Try moving the sound control panel and sound preferences to the trash. I don't remember what other "sound related" control panels you get with OS 8.6, maybe speech and another one or two. I would, just for good measure, move them to the trash as well, along with their preference file. Then restart, and reinstall those control panels, by copying them from another system or even extract them from the OS 8.6 CD using Tome Viewer. The system will rebuild preference files for these control panels. That may get you back to normal. As a long shot... If you son regularly uses earphones, try plugging them back in, and see if you get any sound. There could be something sticking in the audio jack that is automatically muting the sound. You have at least two places to check, maybe three. There is an audio jack on the back of the c600, as well as the front, near the bottom of the case. Likewise, many monitors have earphone jacks. You may have mentioned it, but, do you get any start up chimes? Nancy > Thanks Will but I have checked that option first to no avail. It seems > as if the control panel gets corrupted as it does not show all the > options that it should. Using a extra drive I reloaded the OS (8.6) and > still something damage the control panel ?? Pulled all the drives but > one known tested good unit, from a 2nd working C600 and yet when opened > the control panel it shows corrupted, yet when returned to the 2nd > working C600 all works just fine ? I am starting to think that maybe the > sound circuit on the motherboard has gone bad ? > > Maybe one of our resident experts could shead some light as to how / > were the sound does its start up check or advise how to test ? > > Again thanks for any help, > > Frank in Long Beach > > > -- > SuperMacs is sponsored by <http://lowendmac.com/> and... > > Small Dog Electronics http://www.smalldog.com | Refurbished > Drives | > Service & Replacement Parts [EMAIL PROTECTED] | & CDRWs on > Sale! | > > Support Low End Mac <http://lowendmac.com/lists/support.html> > > SuperMacs list info: <http://lowendmac.com/supermacs/list.shtml> > --> AOL users, remove "mailto:"; > Send list messages to: <mailto:[EMAIL PROTECTED]> > To unsubscribe, email: <mailto:[EMAIL PROTECTED]> > For digest mode, email: <mailto:[EMAIL PROTECTED]> > Subscription questions: <mailto:[EMAIL PROTECTED]> > Archive: <http://www.mail-archive.com/supermacs%40mail.maclaunch.com/> > > Using a Mac? Free email & more at Applelinks! http://www.applelinks.com > -- SuperMacs is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | Service & Replacement Parts [EMAIL PROTECTED] | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> SuperMacs list info: <http://lowendmac.com/supermacs/list.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/supermacs%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
