Are my random shutdowns a sign of a bad battery?

I moved to Brazil a few months back and found that my early model MBA´s battery went flat, though upon checking further, it seems it has run its course in terms of cycles. Now I must have it plugged in to work. The only problem is after a few weeks of use here, it started randomly shutting down on me. When I reboot, it just does it again. There are times when the computer is cold and I boot and it shuts down just the same.
Basically, I´m trying to figure out if the problem is with the battery being out of juice, the different voltage here in Brazil, the fact that my apt complex is far from newly-built (hence the wiring of every outlet might be out of whack), if it is a logic board problem or a 'power management' file issue (as I´ve read briefly here in the forums). If the Apple gods smile upon me, I can maybe get it running for longer than one minute and will be able to test any possible solutions. 
Btw, in January, I took it to Apple in California for a general repair everything fix after RAM problems and when I got it back, the same problems occurred, so I sent it back for another fix at no cost. Since RAM is soldered to Logic in my model, Logic board was replaced twice (therefore things should be running smoothly).
Off topic - My sound input and output also died after a few weeks here.
Thanks for any ideas or suggestions

So I installed Fan Control when the computer decided to work with me for a few minutes and all levels were perfectly normal, until they weren´t, that is.
I left it plugged in (as battery dead) for an hour or two and one of my cats pulled the plug so it shut down. Upon rebooting, I checked Fan Control again before it shut down again. My computer´s only fan (right fan) was at 392,000 RPM!!! Then a few seconds later, it lowered to 149,000 RPM, then shut off. Underneath it´s quite warm to the touch but nothing out of the ordinary (I´ve had Mac laptops for 15 years).
Now, I put a new laptop cooling stand under it in hopes I can curb the crazy RPMs, though as I mentioned, even when cold, my Air will sometimes shut down.

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  • Iphone 6 randomly shutdown in standby mode

    My Iphone 6 16gb randomly shutdown in standby mode, i only can turn it on by hold POWER + HOME. here is the log :
    {"name":"Reset count","bug_type":"115","os_version":"iPhone OS 8.1 (12B411)"}
    Incident Identifier: F0B79DBE-0BE1-431A-813E-70E7E2C17942
    CrashReporter Key: 7305c452a84bf7ce3738c4bedf794c8e76fc4c58
    Date: 2014-11-24 09:17:58 +0700
    Reset count: 1
    Boot failure count: 2
    Boot faults: wdog btn_rst
    Boot stage: 32
    Boot app: 2681261667
    Is this a hardware issue or software issue? thanks

    Hi hnguyen1982,
    If you are having an issue with your iPhone shutting down unexpectedly, I would suggest that you troubleshoot using the steps in this article - 
    If your iOS device restarts, displays the Apple logo, or powers off while you're using it - Apple Support
    Thanks for using Apple Support Communities.
    Best,
    Brett L 

  • Not so random shutdowns...

    Hi,
    My Macbook is just over a year old now still under applecare, I had random shutdowns before and did the firmware update which fixed it. Yesterday, I had the +please hold down the power button...+ message and so did thinking little of it, after all it is not uncommon to have to do it once in a while. Since then though it has been intermittently restarting all on its own and occasionally throwing up the +please hold power...+ message. Interesting to note is the optical drive noise when it restarts itself. I know how it should sound, the kind of mechanical movement sound that happens when you restart normally (or launch parallels and windows grabs hold of your drive). However, occasionally on these restarts it pauses during this sound several times making the same noise but stuttering through it... Strange!
    It seems that I can often make it restart or throw up the power button message by just lifting up the front of the computer, as you would if you were turning it around or something. This leads me to believe it's a hardware fault... Looking under the battery compartment the two outside screws that are on the battery connection side were loose and nearly falling out so I tightened those back up, still the problem persists.
    After the last restart message I copied this error report, I have no idea what to look for, just wondering if anyone can see anything helpful?
    panic(cpu 1 caller 0x001A4A55): Unresolved kernel trap (CPU 1, Type 13=general protection), registers:
    CR0: 0x8001003b, CR2: 0x00270000, CR3: 0x00e08000, CR4: 0x000006e0
    EAX: 0x00000000, EBX: 0x00025fde, ECX: 0x02fa4d90, EDX: 0x24188000
    CR2: 0x02f67af8, EBP: 0x13f7bfc8, ESI: 0xfc52147b, EDI: 0x0000009c
    EFL: 0x00010046, EIP: 0x00101a00, CS: 0x00000004, DS: 0xb018000c
    Backtrace, Format - Frame : Return Address (4 potential args on stack)
    0x2f67968 : 0x128d08 (0x3cc0a4 0x2f6798c 0x131de5 0x0)
    0x2f679a8 : 0x1a4a55 (0x3d24b8 0x1 0xd 0x3d1cc8)
    0x2f67ab8 : 0x19aeb4 (0x2f67ac4 0xe 0xffe10048 0xc)
    0x13f7bfc8 : 0x19b28e (0x2f67b0c 0x1 0x19ad3b 0x2f97d90) No mapping exists for frame pointer
    Backtrace terminated-invalid frame pointer 0xbffffb58
    Kernel version:
    Darwin Kernel Version 8.10.1: Wed May 23 16:33:00 PDT 2007; root:xnu-792.22.5~1/RELEASE_I386
    Model: MacBook1,1, BootROM MB11.0061.B03, 2 processors, Intel Core Duo, 1.83 GHz, 1 GB
    Graphics: Intel GMA 950, GMA 950, Built-In, spdisplaysintegratedvram
    Memory Module: BANK 0/DIMM0, 512 MB, DDR2 SDRAM, 667 MHz
    Memory Module: BANK 1/DIMM1, 512 MB, DDR2 SDRAM, 667 MHz
    AirPort: spairportwireless_card_type_airportextreme (0x168C, 0x86), 1.1.9.3
    Bluetooth: Version 1.9.0f8, 2 service, 1 devices, 1 incoming serial ports
    Network Service: AirPort, AirPort, en1
    Network Service: Parallels Host-Guest, Ethernet, en2
    Network Service: Parallels NAT, Ethernet, en3
    Serial ATA Device: WDC WD1200BEVS-60LAT0, 111.79 GB
    Parallel ATA Device: MATSHITACD-RW CW-8221
    USB Device: Built-in iSight, Micron, Up to 480 Mb/sec, 500 mA
    USB Device: Bluetooth USB Host Controller, Apple, Inc., Up to 12 Mb/sec, 500 mA
    USB Device: IR Receiver, Apple Computer, Inc., Up to 12 Mb/sec, 500 mA
    USB Device: Apple Internal Keyboard / Trackpad, Apple Computer, Up to 12 Mb/sec, 500 mA
    I have tried a PMU reset, PRAM reset and whatever it is that happens when you hold the power button when you turn it on to make it beeeeeeep... The issue happens with or without the power cable attached.
    Unless anyone can suggest anything here I'll be taking it to the repair centre...
    Thanks for reading!

    Ok, this is not an answer but it may help you a little: have you checked your logs? It may be an indication of what has happened there. If you don't know the drill: go to console under applications/utilities, select logs, and go there to /library/logs/panic.log. Some information may appear there, for instance if there is some consistent cause like one of your processors, some specific fault.
    Not much, I know, but at least you may glean something out of it.

  • Macbook in repair for kernal panics and random shutdowns.....

    It's been exactly one week since I sent in my macbook for random shutdowns. I called today to check on the status and they told me it was on hold because they needed more info from me as they can not replicate the problem. This thing was shutting down on me 3-4 times a day without warning. I gave them all kinds of suggestions, ie: check logic board, power management system, panic logs, etc. Don't these techs know how to troubleshoot? My biggest fear is that they won't find the problem and they'll send my defective Macbook back to me. What are my options then? It was bought for me by a friend in Denver who brought it down to Albuquerque for me (500 miles away) so returning it to a store is not an option. I know other people are having this problem so I know I'm not crazy and delusional. I don't want to be stuck with a defective computer but my 2 week grace period is over. What can I do?
    MacBook   Mac OS X (10.4.5)  

    Here's an update on my repair. It's been 2 weeks and they finally found the problem to be a bad logic board. They said it was on hold for repair to replace the board and didn't specify a return time. I expressed a concern with having a month old computer that has already been in for a major repair. After some polite but concerned dialouge between myself and a product specialist, she offered me a new one. I accepted the offer gladly. She even asked black or white? My original was white. So chalk one up for Apple customer support. They seems like they're out to make things right with their customers. You just have to remain calm and patient.

  • Random Shutdown: Locked Clockspeed, Processor Voltage Correlation?

    I use Hardware Monitor to keep track of more sensor readouts than just temps. I recommend everyone install it. Using it, I've discovered some weird behavior in the processor clockspeed and voltage that correlates in a predictable with my typical macbook random shutdown problem. I wonder if others witness the same correlation.
    Normally, according to my sensor readings, the clockspeed and cpu voltage fluctuate frequently and continually, presumably according to the demands on the processor. Clockspeed typically runs between 1333Mhz and 2000Mhz, voltage between 1.00 and 1.30V.
    When running like this, it is subject to random shutdowns at any time, but most especially — indeed with absolute reliability, so to speak — within ten minutes of waking from sleep — regardless of whether i'm using mail, surfing, playing music, or running intense calculations and (so far as i can tell), regardless of how many or few processes are running simultaneously, and regardless of temperature readings. Indeed, now with the new firmware update my temps are quite low. In fact, since the computer most reliably shuts down soon after waking up, it's temp at shutdown often registers no more than the mid-50s (it'll shut down at 47).
    After the macbook shuts down, it refuses to restart reliably with a simple press of the power button. Like many others, I have to hold down the power button for about ten seconds, until I hear the pained protracted beep, before the computer will enter into the normal booting process.
    After it boots up like this from a shutdown — and this is what I haven't seen enough commentary on — the processor speed remains locked at 1000Mhz and the voltage at .99V until the computer goes to sleep again.
    While the computer is locked into this slow-clockspeed-low-voltage mode, it is absolutely reliable. It never shuts down randomly. It runs much slower. Which is really noticeable and frustrating when using any graphics-intense or movie app.
    So my questions are:
    Does anyone else experience this sort of locking processor behavior?
    Why would the processor lock like this?
    Is it possible that the sensors are wrong? That in fact the processor is fluctuating normally but now the computer doesn't "know" it?
    How would the processor's ability to vary its clockspeed and the voltage it draws affect its propensity to shutdown randomly?
    I would be grateful for the observations of others regarding clockspeed and voltage at shutdown and after rebooting.
    Thanks.
    macbook 2.0 Ghz, 1.25GB, 80GB, week 20 Mac OS X (10.4.7)

    hi
    I have exactly same problems and symptoms.
    It was a refurbished week 20 unit from apple uk it arrived in excellent condition and worked perfectly for two weeks without the fan comeing on at all it was perfectly quiet but hot.
    As this was my first mac I was unaware that this was abnormal I had heard that they ran hot but being new to mac I was on a learning curve. Then two days after the remorse return period it began to shut down the first time was after a period of sleep just after I opened the lid. It then was and still is impossible to start it from warm or cold in the normal way, but only by holding the power down until beep. Then it will work for days at 27 deg c without a problem all be it at the 1 gig reduced speed which as you say is frustrating to say the least. Applecare UK don't acknowledge the problem at all they just want to treat it as a normal warrenty repair at my inconvenience. I am at present awaiting a more generous response from apple. I'm demanding a replacement unit but they just want we to fill out their standard web questionaire. (with non relavant tick boxs) If only one could speak to a real knowledgeable individual at apple I'm sure I'd get some satisfaction. But in this age of executive big bonuses what can one expect.
    I hope Apple get real with this soon because the disscussion forums are getting overloaded with this issue its getting harder to login have you noticed.
    yours unhappy customer.

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