MBP overheating wayyyy too much.

Discussion in 'MacBook Pro' started by Hiruki, Oct 11, 2012.

  1. Hiruki macrumors newbie

    Joined:
    Aug 19, 2012
    #1
    I have one of the first gens Unibody MBP's and I played WOW for a bit and SC2. All on low graphics because first of all the computer couldn't handle it any higher. Anyways it got sooooo hot to the point where if I held the "W" key for 3 seconds or longer it felt like it was going to burn my finger. Anyone else have this issue? I'm going to apple tomorrow. They said this may be considered a safety issue and may need to be dealt with. And when I opened it yesterday (which was the reason I called apple) there were some red pixels, so I decided to restart it and the screen won't turn on but the computer will start. But nothing pops up. So could this be a possible recal for overheating? It was getting too hot both on a table and lap. Just throwing up my thoughts, what do you guys think? Thanks in advance! Also, it's a 15" and I believe 2.80 Coreduo processor and 4gb Ram. Nothing special :)
     
  2. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #2
    The Intel processors used in Macs are designed to automatically shut down to prevent damage if they truly overheat. CPU Tjmax = 105C (221F), GPU Tjmax = 100C (212F) on i3, i5, i7 processors. (Source: Intel)

    If you're not already using it, iStat Pro (free) or iStat Menus ($16) will give you accurate readings of your temps and fan speeds, among other things.

    Unless there is a rare defect in a Mac, most temps are well within the normal operating range, considering the workload being put on it. Websites with Flash content, games and other multimedia apps will put higher demand on the CPU/GPU, generating more heat. This is normal. If you're constantly putting high demands on your system, such as gaming or other multimedia tasks, expect temps to rise and fans to spin up accordingly. It's just your Mac doing its job to maintain temps within the normal range.

    It is also quite normal for your Mac to become extremely hot to the touch during intensive operations. The aluminum body transfers heat more effectively than other materials used in computer casings, so you will feel the heat more. This doesn't indicate that it's overheating and will not harm the computer to be hot to the touch.

    Your fans are always on when your Mac is on, spinning at a minimum of 2000 rpm (for MBPs) or 1800 rpm (for MBAs, MBs and minis). iMacs have 3 fans with minimum speeds in the 800-1200 range. They will spin faster as needed to keep temps at a safe level.

    If your fans are spinning up without increased heat, try resetting the SMC.
    (PRAM/NVRAM has nothing to do with these issues, so resetting it will not help.)

    The intake and exhaust vents are in the back of the computer near the hinge on all Mac notebooks (except the new MBP with retina display, which has intake vents along the sides at the bottom). The iMac vent is a slot on the back near the top of the computer. Make sure the vents remain unblocked to allow your computer to perform at its best.

    Learn about the fans in your Mac
    Apple Portables: Operating temperature

    For Flash-related issues:
     
  3. Hiruki thread starter macrumors newbie

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    Aug 19, 2012
    #3
    Were the fans made to turn on only on the i series of the processors? Cause its not an i series which may be the problem and may be overheating because of that.
     
  4. GGJstudios macrumors Westmere

    GGJstudios

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    May 16, 2008
    #4
    Your fans are always on. They'll spin faster as needed. Use iStat Pro, as I recommended, to get accurate readings.
     
  5. Hiruki thread starter macrumors newbie

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    Aug 19, 2012
    #5
    Only thing now is I can't even log in because the screen won't work. :/
     
  6. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #6
    Did you try restarting?
     
  7. Hiruki thread starter macrumors newbie

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    Aug 19, 2012
    #7
    I did, and did all the apple support told me todo, take out the battery, hold the power button down for 15 sec, put battery in, push power and hold command, option, R and P all at the same time. Nothing worked.
     
  8. Queen6 macrumors 603

    Queen6

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    #8
    If you are concerned about temperature and want to reduce it elevation of the rear of the machine helps, as sitting flat on the desk only reflects the heat back to the base of the Mac. You can buy passive aluminium coolers like Rain Designs Mstand or iLap. Most powered coolers are designed for PC notebooks and don't work overly well with Mac`s if at all. One cooler that does work efficiently is the Moshi Zefyr 2, as it`s principle of cooling is specifically designed for Apple portables, by blowing the air horizontally across the base of the computer, however don't expect miracles.
    [​IMG][​IMG]
    [​IMG]

    Link: Moshi Zefyr 2
    A cheap USB fan can achieve the same if strategically placed, not as elegant mind, nor as easy to put in your notebooks case :p but they do help to reduce case temperatures.

    You can use software to override Apple`s own cooling algorithm by manually taking control of fan RPM and setting up power profile presets with SMC Fan Control 2.4, or here with UltraFan which allows you stipulate a preset temperature and the software will automatically raise and lower fan RPM`s to keep the system at the predefined temp, which i personally feel is a far more elegant solution. At the end of the day you want to control your system temperature, not your fan rpm`s. For me SMC is now pretty much redundant with the latest release of UltraFan having manual control of the fans RPM, and subsequently i am starting to uninstall it from my own Mac`s. SMC FC is a great app, however although it`s recently updated, functionality is limited compared to some newer apps, equally SMC Fan Control is rock steady stable and a finished product.

    Strictly speaking Apple`s own cooling algorithm works, albeit at sacrifice of increased temps for quieter operation. This has always been the Apple way and is really nothing detrimental to the system, i have one MBP from 2008 all original barring a recent fan change that has an uptime of over 30K hours. The latest MBP`s need less assistance in remaining cool; for some it`s simply disconcerting the heat generated and transferred to the case, although it`s perfectly normal as the aluminium acts as a heat-sync. i have to deal with elevated ambient temperature so at times a software solution is useful. Apart from the passive cooling the Mstands bring they also offer a very sound ergonomic solution. A passive cooler and UltraFan will maximise the cooling, there is little else you can do short of reducing the ambient temperature or the system load. If I know i am going to push a system i will close all apps that are not essential as this can and does make an impact to system temperature.

    High temperatures in general is not overly harmful to your systems, what is far more detrimental is thermal stress, where temperatures rapidly fluctuate by significant margins over a short period of time. Anyone striving for great longevity should look to minimise rapid temperature changes, here UltraFan is your best friend.

    Using a RainDesign Mstand, a Moshi Zefyr 2 and latest version of UltraFan I can reduce temperature by over 20C when transcoding an MKV video file, and that is something worth thinking about;

    • Apple default cooling algorithm 99C - 103C (still on Mstand) fans 4K and escalating :eek:
    • Mstand, Zefyr & UltraFan 79C - 82C fans at 5.8K :cool:

    The old adage still applies; it`s easier to keep a system cool, than cool-down an already hot machine. This being said it`s not strictly necessary, equally it`s nice to know that there are options for reducing temperature out there.
     
  9. Queen6, Oct 11, 2012
    Last edited: Oct 12, 2012

    Queen6 macrumors 603

    Queen6

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    #9
    Yes i do believe this may be related to temperature and the only real solution for you is to have Apple look at it; your system is several years old, the cooling system is likely clogged and not performing optimally, resulting in it running extremely hot, however what you are describing on face value is Logic Board failure.

    When you push a Mac it`s not a bad idea to monitor the system temperatures, nor to assist with system cooling. Many industries conduct thermal stress testing and they look to achieve a heating/cooling rate of no more than 3C per minute. The guy`s in our lab have a vast array of monitoring equipment to ensure limits are not exceeded and for good reason, as the lifecycle of the electronics packages can be seriously degraded, if heating & cooling cycles are too aggressive and or maximum temperatures exceeded.
     
  10. Hiruki, Oct 12, 2012
    Last edited by a moderator: Oct 12, 2012

    Hiruki thread starter macrumors newbie

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    Aug 19, 2012
    #10
    Thank you! I am bringing it in today to have it looked at and will keep you updated on what they say it was. Thanks again ;)



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  11. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #11
    As stated in my first post, PRAM/NVRAM has nothing to do with heat/fan issues. Resetting it will not help. Only resetting the SMC addresses such issues, and then only if there is increased fan speed without increased heat.
     
  12. Queen6, Oct 12, 2012
    Last edited by a moderator: Oct 12, 2012

    Queen6 macrumors 603

    Queen6

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    #12
    I wish you well, however i fear the worst as if the Logic Board has issue it will mean a replacement board which may not be economically viable on an older machine. A newer faster machine is likely more cost effective.
     
  13. makaveli559m macrumors 6502

    Joined:
    Apr 30, 2012
    #13
    Hi is urs the unibody version? You can buy a cooling pad called the Tilt 15 for the 15 inch unibody versions that adds passive cooling to ur notebook or buy one that has a built in fan for active cooling.
     
  14. Hiruki thread starter macrumors newbie

    Joined:
    Aug 19, 2012
    #14
    Yes it is the unibody, I may do that! I probably need one. Did some tests and now it's back on. The Genius Bar said they had no clue what happened. Said they will do some major stress tests on it because they think it may be the graphics card may be over heating with all the stress. Which shouldn't be.
     
  15. Hiruki thread starter macrumors newbie

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    Aug 19, 2012
    #15
    Just got the call and they said my moniter needs replaced ($350 repair.) and that my Pro is in its normal perimeter of heat. Maybe it does just get that hot.
     
  16. GGJstudios macrumors Westmere

    GGJstudios

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    May 16, 2008
    #16
    Yes, it's normal, as stated in my first post, especially when playing games or other intensive activities.
     

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