Question about Apple MacBook Mac Notebook

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Random Shutdown Syndrome

I think that my mac is suffering from the infamous "Random Shutdown Syndrome", what can I do???

It just shuts down for no reason sometimes, is this syndrome still around? What can I do to fix it?

Please help me sort this before it gets worse,
Thank you.

Posted by Anonymous on

  • clarkleslie Aug 12, 2008

    Mine goes down every three minutes -- or more frequently. It started today. Never had a problem with it before. Got worse all day. APLCARE acted like I was the first person who ever had this problem. Help!

  • Anonymous Mar 10, 2009




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The Random Shutdown Syndrome (RSS) is caused due to the heating of the heatsink.

When the heatsink warmed up it expends, and causes the system to trip. Apple replaced the defected parts and fixed the problem, i guess not for all macs...

Posted on Aug 17, 2008


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If you can't keep your laptop stable and on for longer period, and you're experiencing random shutdowns I'd say you're facing a motherboard problem. This failure is actually well known and hapens a lot with Toshiba and HP. You'll most probably need to repair the motherboard that suffers from the Maxim 1987 or Maxim 1532 power chip failure.
The repair process is fairly straightforward, but it isn't for the faint hearted. It requires a resolder of the tiny Maxim 1987 chip that should get your motherboard up and running again in no time. The other alternative is to go for a new motherboard, or just get a new laptop alltogether.
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there have been problems with MacBooks suddenly shutting down since the first Intel based MacBooks were made. It is called RSS. (Rapid Shut Down Syndrome). The cause of which I have learned in the following excerpt.
Since isolating the heatsink as the cause of the MacBook’s Rapid Sudden Shutdown (RSS), readers have isolated the specific part of the heatsink that is causing the problem, is actually the CPU thermometer itself. Essentially, the heatsink can expand during use, and comes into contact with the lead from the thermometer’s sensor cable. A short circuit results, and the SMC pulls the plug. Once the system cools down, the heatsink resides and the contact is broken. This also explains why sometimes you cannot immediately power the MacBook back on. The heatsink is still in contact with the metal lead.
Apple’s solution to this is to realign the location of the thermometer and cabling on the heatsink so that it does not short circuit. That is why the new heatsink is necessary. In the view of this writer, it warrants a public recall. Any user can produce easily the scenario that causes the MacBook to crash, even with pre-installed applications such as iLife.

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Fame !

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