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Mac Mini - Random Shutdown Syndrome
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G-Creations
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PostPosted: Sun Nov 19, 2006 3:18 am    Post subject: Mac Mini - Random Shutdown Syndrome Reply with quote

Hello,

Since yesterday I experience the "RSS" problem on my Intel Mac Mini Core Duo!

The system.log says following line:
[i]"Nov 18 15:59:48 localhost kernel[0]: Previous Shutdown Cause: -30"[/i]

I have a complete .rtf log file available if somebody I kind/clever enough to take a look at it, cause I do not understand a word it tells me!

Yesterday the maximum uptime my Mac could reach was 20 minutes!
After this the system constantly auto shutted down approx. 10 seconds OSX Tiger was booted!

What can be problem?

Thanx

John
john(at)g-creations(dot)be
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digifan1
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PostPosted: Fri Nov 24, 2006 3:09 am    Post subject: Re: Mac Mini - Random Shutdown Syndrome Reply with quote

I have the same problem the first day after my mac mini core duo came back yesterday from the repare (kernel panic). No kernel panic, but I got RSS. Now it goes back to the same repair laboratory.



[quote="G-Creations"]Hello,

Since yesterday I experience the "RSS" problem on my Intel Mac Mini Core Duo!

The system.log says following line:
[i]"Nov 18 15:59:48 localhost kernel[0]: Previous Shutdown Cause: -30"[/i]

I have a complete .rtf log file available if somebody I kind/clever enough to take a look at it, cause I do not understand a word it tells me!

Yesterday the maximum uptime my Mac could reach was 20 minutes!
After this the system constantly auto shutted down approx. 10 seconds OSX Tiger was booted!

What can be problem?

Thanx

John
john(at)g-creations(dot)be[/quote]
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G-Creations
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PostPosted: Sat Nov 25, 2006 12:06 am    Post subject: Reply with quote

I solved the issue! I had to reset the SMC! The SMC controls the power suplly for the mac! Simply unplug the power cord for about 15 seconds,...and replug it!,....this does the trick!
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macmini_256PPC
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PostPosted: Sat Nov 25, 2006 12:13 am    Post subject: Reply with quote

I have experienced similar problems, what is the SMC?

Thanks, Very Happy
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G-Creations
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PostPosted: Sat Nov 25, 2006 12:19 am    Post subject: Reply with quote

The SMC = "System Management Controller"

In the PPC Macs this was a chip who had to be reset when Mac occured to have random power failures! This chip controls the power supply to all the components of the mac,..like processor, hard drives,...ect ect When the SMC is disrupted Mac's constantly shut down!

On PPC you had to open the mac to reset this!
On Intel Macs you simply have to shut down your mac,...unplug the power cable for about 15 seconds,...and then replug it,....and the SMC is reset!

I didn't know it either at first,...but some research on the Internet teached me from other people who had the exact same problem like I had! -> random shutdown, and an error in the apple hardware test!

Now both issues have been solved by resetting the SMC,...and my mac mini is constantly online now! Smile
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PostPosted: Sat Nov 25, 2006 12:22 am    Post subject: Reply with quote

Thanks, too bad I have a PPC Mac mini, I don't want to damage it by opening it, though I am watching some videos on how to open it now. my maci froze rahter than shut down, so I am not sure that it's the SMC. Thanks, Very Happy
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G-Creations
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PostPosted: Sat Nov 25, 2006 12:28 am    Post subject: Reply with quote

http://docs.info.apple.com/article.html?artnum=303446

This is what I found about the Intel Mac's,....
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G-Creations
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PostPosted: Sat Jan 13, 2007 1:20 pm    Post subject: Reply with quote

Hello,

A few weeks after I had destribed the RSS problem on my mac mini and I claimed to have solved it,..it happened again! After 45 minutes,..the mini shutted down,...and would no longer have an uptime of 1 minute. All previous methods mentioned before did not solve the problem.

A hardwarefailture, which I had last time, came back and I deceided to let it be fixed at the dealers office. At first I figured that the processor (core duo) came too hot,..and shutted down for safety reasons.

The dealer made a phonecall with Applle and it seems that de hardwarefailure: SNS0000 ect ect,...upper_lower_front (or something like that) is a direct problem on the logic board! Kind off the same problem the first generation of macbooks had!

The dealer replaced the logic board with a brand new one and now the mini has been up all day,...without any hickups! I even played a few DVD's just to make sure the mini heated up enough,....

I hope I will not encounter any more problems,...cause I had 2x the Superdrive changed,..and now the logic board. if you look at it,...i have a "brand new machine",...
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nyr
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PostPosted: Mon Jan 22, 2007 9:41 am    Post subject: Reply with quote

Hi, G-Creations

I seems to have the same problem with my Mini as you, I have tried the SMC reset, but that doesn't help, I was starting to think it was the memory, I have updates it to 2GB.
But maybe its the logic board thats the problem, can you see in your system.log that it was the problem with yours or how did the Apple guy know what to change.
I hope you can help me get idea of what my problem is...
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7031
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PostPosted: Mon Jan 22, 2007 11:25 am    Post subject: Reply with quote

[quote="macmini_256PPC"]Thanks, too bad I have a PPC Mac mini, I don't want to damage it by opening it, though I am watching some videos on how to open it now. my maci froze rahter than shut down, so I am not sure that it's the SMC. Thanks, Very Happy[/quote]
PPC Macs do not have an SMC.
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PostPosted: Mon Jan 22, 2007 12:35 pm    Post subject: PMU Reply with quote

[quote="7031"]PPC Macs do not have an SMC.[/quote]

True, but they have a PMU. Linked document contains reset instructions:

http://docs.info.apple.com/article.html?artnum=300574
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G-Creations
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PostPosted: Mon Jan 22, 2007 1:42 pm    Post subject: Reply with quote

Hi nyr,


Did you run a hardware check with the OSX DVD ? (Press D when startup with DVD in drive,,..and hardware checkup would start)

I had an error called: SNS4000000...ect ect Upper_Left_Front,;..or something like that!
My authorized apple dealer made contact with Apple and they confirmed that this type of error means that there is something wrong with the logic board!
The logic board is kinda the whole computer,...the motherboard,...cause alle components are attached on it!

They had the same problem with the first generation of Macbooks,...and they all got a new logic board!

My problemscenario was like this:
A few days after I had installed the firmware update for the mac mini through system update,...

***BOOTUP**** Mac reaches uptime of 45 minutes,..
***SHUTDOWN*** which happens instantly,..even when mac is doing nothing
***REBOOT MANUALLY*** Mac reaches uptime of 1 minute,...
***SHUTDOWN***
ect ect,..same scenario

***BOOTUP*** Mac is manually booted after 30 minutes downtime
***SHUTDOWN*** which happens after 15 minutes uptime

Conclusion I had: Processor gets to hot and is not cooled properly and shuts down for safteny reasons,..otherwhise the processor might get damaged,...

I searched on the net for the hardware failure i received after the appel hardware test,...and not satisfying description of the problem,...

I guess the tech guys know a lot more then we do,...

I gave to my autorized dealer following items:
- 2 system.log files
- picture of the hardware failure
- a very exact description off the things I had done with the mac!

can you do the hardware test and let us know,... I am pretty sure you have kinda the same issue I experienced! Get that mac fixed soon,..cause you'll get it for free if you are still in warranty period
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PostPosted: Mon Jan 22, 2007 8:15 pm    Post subject: Reply with quote

[quote="G-Creations"]I solved the issue! I had to reset the SMC! The SMC controls the power suplly for the mac! Simply unplug the power cord for about 15 seconds,...and replug it!,....this does the trick![/quote]

If the MacBooks RSS problem was only this easy to fix...
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G-Creations
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PostPosted: Tue Jan 23, 2007 1:05 am    Post subject: Reply with quote

Indeed,....the Macbook's logic board had to be replaced in many cases,....like my Mac Mini,...! I cannot really understand why these issues struck the Macbooks and some Mac Mini's,...
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PostPosted: Tue Jan 23, 2007 5:46 pm    Post subject: Reply with quote

[quote="G-Creations"]Indeed,....the Macbook's logic board had to be replaced in many cases,....like my Mac Mini,...! I cannot really understand why these issues struck the Macbooks and some Mac Mini's,...[/quote]

Probably because they made the transition from PPC to intel so fast. There never seemed to be this many RSS issues with PPC machines. Is your mini PPC or Intel?
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