PowerBook owners redo your thermal paste!

Discussion in 'PowerPC Macs' started by tom vilsack, Apr 28, 2015.

  1. tom vilsack, Apr 28, 2015
    Last edited: Apr 28, 2015

    tom vilsack macrumors 68000

    tom vilsack

    Joined:
    Nov 20, 2010
    Location:
    ladner cdn
    #1
    Can't stress the difference it makes.

    Today I redid my PowerBook G4 1.5GHz/1g ram/128mb ati 9700.

    Before I was seeing idle temp's in high 50's C and mid 60's C browsing/video ect...( fan's would kick in high while playing utube vid's in mactube's/Uview ect )

    After redoing thermal paste I'm seeing idle temp's about 42 C,and browsing/video ect temp's of low 50's C (and no fan's kicking in!)

    Massive difference.

    While not the easiest thing to redo,using ifixit and taking time (1.5hrs) was well worth the effort....
     
  2. bunnspecial macrumors 603

    bunnspecial

    Joined:
    May 3, 2014
    Location:
    Kentucky
    #2
    Sounds like a good post-thesis project for me. I have the 15" and 17" 1.67ghz DLSDs, another 15" DLSD on the way, two 12" 1.5ghz, and four TiBooks.

    The '08 Macbook Pro I'm typing this from probably could stand it also, as it gets toasty. I did both of my Macbooks(they are easy), but the Macbook Pro is a bit more involved.
     
  3. eyoungren macrumors P6

    eyoungren

    Joined:
    Aug 31, 2011
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    Phoenix • 85037
    #3
    I think it's news when you DON'T have something on the way. :D
     
  4. ziggy29 macrumors regular

    Joined:
    Oct 29, 2014
    Location:
    Texas
    #4
    Yeah. When I was trying to put an IDE/ATA SSD into my Pismo last month, the drive got wicked hot and failed, which made me think there was a heat problem on my part. I redid the paste, cleaning up the old stuff and putting a new layer of AS5 between the CPU and heat sink. Well, that didn't help the SSD (which was returned), but it definitely helped the temperature of the CPU. The difference is pretty obvious.
     
  5. bunnspecial, Apr 28, 2015
    Last edited: Apr 28, 2015

    bunnspecial macrumors 603

    bunnspecial

    Joined:
    May 3, 2014
    Location:
    Kentucky
    #5
    Sadly, that's probably true :)

    I'm super excited about the Sonnet Duet-also on the way. I just don't know how long it will take to get from Germany. Surprisingly enough, it only cost me 15€(~$20) to have it shipped. The bottom line on it was less than $200. I just need to decide where it put it :)

    I might actually take the Giga out of the Quicksilver it's currently in and replace it with the Sonnet, and then experiment with the Giga in my rack-mount DA G4.

    BTW, I bought my first PowerPC Mac almost exactly a year ago-a single 1.8 G5. Not counting the incoming DLSD, I have 52 PPC Macs. That's an average of 1 per week.

    I also have a C2D Intel iMac that's due to be delivered tomorrow :)
     
  6. redheeler macrumors 603

    redheeler

    Joined:
    Oct 17, 2014
    #6
    You've only been doing this for a year and you already have 52x... Now that's what I call dedication, and also a little bit of an addiction ;)

    My first PPC was in February 2014, my iBook Clamshell. It was my third Mac overall after my 2 rMBPs. Now I've got 30, 6 of which are Intel and the rest are G5 or earlier.

    Lately I've been hunting on eBay for a 17" PowerBook G4 1.6 (DL-SD) and 15" Titanium PowerBook G4 1.0, both machines I do not have and each the best example of its form factor. Hopefully I'll find one in good condition for a good price.
     
  7. bunnspecial macrumors 603

    bunnspecial

    Joined:
    May 3, 2014
    Location:
    Kentucky
    #7
    I bought a 1ghz TiBook from the marketplace here. The guy had two of them, and I only bought one-he might still have the other. I did negotiate the price a little bit.

    Funnily enough, before that one had even arrived I found one without a hard drive for $40 w/free shipping on an Ebay buy it now. I bought that one too.

    The bottom cover of the TiBooks has a plastic "skeleton" that has is glued to the metal cover. The plastic part is what actually "locks" the bottom onto the frame. Many folks unfamiliar with the design will just remove the screws and attempt to lift the cover straight off, which almost always results in the skelton separating(the proper method is to SLOWLY tilt the bottom foward and up). Even someone who knows what they're doing could rip one off if cover hasn't been off in a while(or ever) and goes too fast.

    In any case, the bottom will hold with the screws in place, but it leaves a gap at the front as there are no screws there. My second 1ghz TiBook(as well as my first ever, an 867mhz) had this problem.

    It can pretty easily be fixed by carefully using epoxy to attach the skeleton to the bottom-there's really only one way to go, so it's not even a big deal to have to do it.

    As for the A1139, mine was about $140 including shipping from a seller in Canada. I think I upgraded the RAM, as I believe it only had 1gb or maybe 1.5gb when I received it. I also stuck in an SSD, although that wasn't strictly necessary. I tend to prefer the A1138(same thing in 15") but both are great computers.

    The '08 MBP I'm typing this message from looks a whole lot like an A1138 :)
     
  8. 556fmjoe macrumors 65816

    Joined:
    Apr 19, 2014
    #8
    My 12" PowerBook had a really nasty looking thermal pad that was well past its prime. I replaced it with some paste and temps dropped by about 10 C. Since the newest PPC machines are a decade old, it's a good idea to check this IMO.
     
  9. Altemose macrumors G3

    Altemose

    Joined:
    Mar 26, 2013
    Location:
    Elkton, Maryland
    #9
    I have seen this degree of change in one of my PowerBooks too. It really does make the difference especially on machines with higher clock speeds.
     
  10. roadbloc macrumors G3

    roadbloc

    Joined:
    Aug 24, 2009
    Location:
    UK
  11. weckart macrumors 68040

    Joined:
    Nov 7, 2004
    #11
    But be careful about ripping off pads to replace with paste. Some units are designed to work only with pads as the clearance is too large for paste to bridge effectively.
     
  12. mikiotty, Apr 29, 2015
    Last edited: Apr 29, 2015

    mikiotty macrumors 6502

    mikiotty

    Joined:
    Mar 15, 2014
    Location:
    Rome, Italy
    #12
    Were your PowerBooks actually toasty on the bottom when they reached the 55-60°C mark? Mine is, but I may replace the thermal paste with MX-4 anyway.

    At the moment, I have G4FanControl set to ramp up the fans at 50°C, so when the fans start the temperature levels at about 49-50°C and stays there with the fans on.
     
  13. Altemose macrumors G3

    Altemose

    Joined:
    Mar 26, 2013
    Location:
    Elkton, Maryland
    #13
    The later model 15" work fine with replacement thermal paste instead of the pad provided you use a thicker coat of thicker paste like Ceramique 2. I heard a story where a 12" burned up from using paste instead of a pad so I think it varies by model as to how much space is between the heatsink and the CPU/GPU.
     

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