on 6/18/05 10:51 AM, Fluxstringer at [EMAIL PROTECTED] wrote:

>> I'm Marcelus, 30 years old from São Paulo City, Brazil*, owner of a PowerMac
>> 7600/132 CPU with 2GB HD/16MB RAM running Mac OS 8.1.
>> 
>> Well, this CPU seems to have a problem: it doesn't turn on or shut down
>> properly. That is, I can't turn the 7600 on using the power key on the
>> keyboard or even pressing the power button on the CPU; the 7600 only turns
>> on directly when I plug the AC power cord on the CPU.
> 
> 
> The wire from the keyboard to the computer has an ADB plug on the
> end. That plug or the socket it plugs into may be dirty not giving a
> good connection. Some electronic contact cleaner or rubbing alcohol
> and an old toothbrush should remove any dirt or film, preventing
> electrical contact. with repeated application.
> 
> If the machine does not start or shutdown after this operation look
> for a damaged ADB cable or damage to the power button.
> My power button takes a firm straight down push to activate properly..
> 
> Can you borrow another keyboard to try?

Hi,


I've tried to attach another keyboard, but the problem persisted.


>> But when the power cord is connected and the 7600 is on... I can't shut it
>> down or make it sleep properly. When I choose "Sleep" or "Shut Down" on
>> Finder's menu, the OS close all windows and turn the screen off -- but I can
>> hear the CPU power source and fan still functioning, as it was waiting for
>> me to press some button to turn the computer off (as the same way LCs and
>> Qaudras 610 do) -- but this button doesn't exist!
> 
> 
> What about the button on the front of the machine on the lower left?

It simply doesn't work right, too.


> It sounds as if your machine is not responding to the Power button on
> the keyboard.
> When the screen goes dark and you still hear the fan running the
> machine is in " sleep " mode.

But slepping does not implies in stopping of the fan running and the monitor
turned off? When I choice "sleep", the screen just goes dark, but it's still
"awake", as if it was showing a black picture.


>> So, to turn the computer off, I have to literally pull the AC power cord
>> from the CPU.
>> 
>> The most bizarre thing is that when I boot the 7600 using a Mac OS 8 Install
>> CD, it's possible to make the Mac sleep and "wake up" properly, although
>> Shut Down still doesn't work as expected.
>> 
>> Well... does anybody here has a clue about what kind of problem is affecting
>> my 7600 to behave this way? What would be the remedy?
>> 
> ______________________________
> 
> Try zapping the PRAM.
> 
> If there are still problems after that trash the Finder prefs.  And
> rebuild the desktop.
> Beyond that do you have any other software that may not be shutting
> down?  Something in the shutdown  folder?

I've tried almost everything including these. It didn't help so far.

Well, maybe a last resort should be appeal to the Open Firmware, but I still
don't know how to do this...

Anyway, thanks for helping me.





-- 
MaGioZal.
<http://magiozal.mondo-exotica.net/>
<http://suq-al-manakh.mondo-exotica.net/>
<http://blog.lugaralgum.com/>
<http://fotolog.net/_magiozal/>
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