SHUTDOWNS

Another machine to add to the list. Bought in June, started to shutdown randomly last week. Called AppleCare yesterday and was told to remove and then reinstall the memory. Why I am supposed to do this myself is beyond me, but I did as asked. But then the lever that reseats the chip would not close, so the memory is not being read, and the machine would not boot at all. So now it is off to Apple for both the chip lever problem AND random shutdown syndrome. I am so very deeply disappointed with Apple. Look, still worship the software and love the design, but hardware reliability is really going down the toilet. (My wife bought a new iMac last year that suffered from overheating and the local Mac store only replaced the board after the THIRD visit. Many hours and $ lost.)

MacBook 2GHz Black Mac OS X (10.4.7) Crap - Suffering from Random Shutdown Syndrome

uh oh....my macbook is starting to suddenly shutdown as well. it hasn't been a HUGE problem, very occasional. i think i can sit and wait to see what more people who have sent their macbooks in recently have to say about the fix.

the only problem is that if i lose my macbook right now, the only other computer i have is an ibook g4 with an unresolved logic board problem (unresolved as in, i refuse to pay for a new logic board when this is a known problem of a defective part). i LOVE apple, but these logic board issues have been ongoing since the g3 and are really, really annoying.

Yes, I am using my newely-repaired MacBook (LB and heatsink) in a 20C room at the moment, and the case by the esc key is only slightly warm, the core temp is 23C can you believe that!? This MacBook used to be running at 38C before the logicboard and heat sink replacement. I think the heatsink thermal paste seating was possibly defective, and when i ran it hard in the summer (30C ambient temperature) the board overheated, resulting in the Logicboard heat-sensing mechanism becoming defective; thus the cold/warm RSDs thereafter.
I also have a small iBook, and used it extensively in SriLanka at 35-40C ambient temperatures and it never had a problem, even the battery is amazing-the same battery runs for 3+hours and its 2 years old. I am finishing this post @ a core temp of 23C ... still hasnt changed. Like i said earlier, if your MacBook gets hot right now, it may or may not begin RSD but a HOT MacBook appears to be a problem just waiting to turn into a RSD.

Apple would probably not give you credit towards a different( and more expensive) computer. but the macbooks have had few issues with RSD, and the older models' quirks have pretty much been ironed out for the most part. the 17" macbook pro has had the fewest complaints.

I would still have the computer checked out when you can, as it seems that apple is currently circulating new logicboards and heatsinks to repair older RSD macbooks while distributing updated macbooks.

im still iffy about recommending macbooks to people, but i would definitely recommend a macbook pro. its been around a bit longer than the macbook, so its issues are already dealt with. it almost strikes one as beta testing doesnt it???

i hate to say this, but a core temp reading of 23C suggests very strongly that your sensors have malfunctioned!

what the heck - if your computer has a fault and is
into warranty time, too, why not take it back and
have it repaired for free instead of whinching about
it ??!!

fair enough it could be microsoft's fault: pc users
are so used to unresolvable hard- and software
issues, they really seem to believe that every
computer has to be a piece of sh**...

well, now that you own a mac, live up to it, get a
grip and get help!

else, just go ahead, go back to pc, and guess what:
we dont feel threatend at all...

I have had four MACs, and I am not at all happy about this shutdown question. It seems to me that a product should be tested before it is sold and not after.

I bought my MacBook in May, it has now developed the dreaded shutdown cause -82. It has gone back to MAC UK for repair, and on the repairs web page, I am told the repair is complete, and the computer about to come back; but on the phone I am told there is no stock and they don't know when it will be returned. Reading these pages, I am not even sure if the repair will fix the problem.

I need my computer for teaching. MACs cost 20% more than PCs, I am willing to pay that for better reliability and a better machine, but Apple should have repair-stock before beginning sales, and should not be testing machines on us. I have been told that the problem could be due to insulation of some cables that tend to short; but there are many other suggestions on this site. I agree with the person who asks whether this is not a recall situation.

I suggest that all people who have this problem urgently send back their computer for repair


MacBook Mac OS X (10.4.7) i-book

Shutdown cause -82

I have been told by AppleCare that this is now a well known and understood problem concerning a shorting badly insulated cable and that the logic board should not need to be changed.
Clearly this is not the case as my computer is blocked in England waiting a replacement part. Other messages speak of heat-sinks, and suggest Apple do not know what is wrong.

There must be a problem concerning overheating, because only recently there was an upgrade introduced for controlling the fan.
I then noticed how often the fan switched on at maximum power.

Incredible that such a new product should develop an overheating problem. Competition, obviously means that products are not completely tested.

Apple is either unable or unwilling to be clear about this problem.
Even the repairs information have been misleading
The Apple care web page (sent to me via e-mail link) inform me that my computer had been repaired, and is about to be returned, while by phone I have just been told that they are still waiting for parts.


MacBook Mac OS X (10.4.7) i-book

I have to admit that 23C core temp was low; however the MacBook did reach 34C under heavy use later in the day. My fingers are accurate 🙂 and the outside case temp just doesnt come anywhere near its pre-repair levels. The case temp would rise very quickly after startup (within 5 min) and run very hot under heavy loads (i do a lot of work with large graphic-embeded documents and peripherals). I downloaded the core duo temp sensor from this site: http://www.apple.com/downloads/dashboard/status/temperaturemonitorwidgetedition. html
Intel Core Duo temp parameters are: 50° to 95° F (10° to 35° C) according to Intel.

Intel core duo has two legacy thermal control features: "THERMTRIP: a fixed temperature sensor to detect catastrophic thermal conditions and to shut down the system if thermal runaway occurs.
PROCHOT: a fixed temperature threshold that provides the DVS with a self-control mechanism that drops frequency and voltage to a new working point (a more detailed description of this mechanism can be found in [1])."

I believe some MacBooks are experiencing THERMTRIP at high-end core temperatures, and I have personally experienced slower CPU responses when PROCHOT kicks in. The Intel Article is here: http://www.intel.com/technology/itj/2006/volume10issue02/art03power_and_thermal_management/p03_powermanagement.htm

Once the first shutdown occurs (as mine did) I believe the THERMTRIP sensor begins to respond erroneously under high voltage loads, as in a cold startup, even though the actual core temperarue is well within safe operating temperatures.

I've decided to go back to my old powerbook then send my macbook in to service. Once that is fixed I think I will by one of the new Macbook Pros when they come out in November.

Interesting though at the top of this thread there is a recommendation to log in as guest. I did that and my MB has been working great all day. Course it is usually in the morning when it cools of that I have issues.

George

I've decided to go back to my old powerbook then send
my macbook in to service. Once that is fixed I think
I will by one of the new Macbook Pros when they come
out in November.

George

I have had to go back to my iBook, no other choice. My MacBook has been away for two weeks. After one week, I received a message saying it was repaired but waiting return. After three more days I phoned AppleCare and they told me it had not been repaired, but that they now had the necessary part. After two weeks, I have received an e-mail saying they don't have the part and it is out of stock. They did not even apologize for the inconvenience.
Even if it comes back, will the problem have been solved, or will secondary problems occur relating to over-heating. How can we show our severe annoyance to Apple. They are very careful not to allow feedback channels. I think this is now a case where Apple should call back these machines. I would like a replacement, not a returned faulty Beta product.

Anthony

MacBook i-book

MacBook i-book

I Have sent my macbook back and I told the repair man that it was not my OS but the heatsink (he told me last time that it was my OS. HA HA HA). So at the moment I am on my old pc with the crappy vista.

Please come back soon, I need you macbook.

When I shtudown the odd time it works perfectly - most of the time it goes to a blue screen with the twirler that twirls indefinitely. I have to press the power button to get it to go off.

How do I remedy this or are they encouraging you to leave the computer on standby?

It sounds like a memory buffer overload issue Igitur; caused by software conflicts; the first thing i would suggest is going into disk utilites ( its in your applications) and click onto your hardrive and verify disk permissions. If you get some error messages, you can then click "repair disk permissions" and once it has gone through the process (this can take 20 minutes) close the disk utility and restart your computer.

If that doesnt fix your problem, then I might suggest reinstalling Mac OS operating system, and see how the computer runs; if it still "hangs" then its not a software issue, it may be that your memory cards are not seated properly or something more serious. In that case, take it in for service.
good luck

When I shtudown the odd time it works perfectly -
most of the time it goes to a blue screen with the
twirler that twirls indefinitely. I have to press
the power button to get it to go off.

How do I remedy this or are they encouraging you to
leave the computer on standby?

mine is doing it too

has anyone ever got this repaired?
it happens so randomly and i dont see the point of giving it to a service (to reduce the small amount of occasional shutdowns) as long as no one really knows what it comes from. i paid to use it not to wait for it

it happened while surfing in the net and in a very cold state
i doubt the heat sensor is to blame unless it works the other way around

mine is doing it too

has anyone ever got this repaired?
it happens so randomly and i dont see the point of
giving it to a service (to reduce the small amount of
occasional shutdowns) as long as no one really knows
what it comes from. i paid to use it not to wait for
it

The Apple repair fixes the shutdowns, at least from what I have seen in school labs. Alternately, if you are comfortable at computer disassembly, you can potentially fix the problem yourself by breaking the glue that holds the sensor wires to the heatsink's side, and nudging the wires away from that area. So far, this works with the computers I have personally seen.

Your choice...

Eventually, as the wires' insulation compromises at the heat contact point, the shut downs will increase.