Thorough cleaning

Discussion in 'Mac Pro' started by mattspace, Dec 23, 2018.

  1. mattspace macrumors 65816

    mattspace

    Joined:
    Jun 5, 2013
    Location:
    Australia
    #1
    So I'm getting the feeling my temps are running higher than before, and it's been a bit over a couple of years since upgrading the CPUs and using Arctic MX-2, which I think has that sort of service life. Just did a quick dust-out, and there's a fair few dust bunnies hiding in the fans, including the cooler block fans, also the CPU board has a fine film of dust that's got a tacky adhesion to the board. Most of it is gripping on hard enough that the can of compressed air can't dislodge it.

    What's the best cleaning product? Isopropyl? I recall someone posted a nice restoration thread with a careful clean recently, is there anywhere that shouldn't get "wet" during the cleaning?
     
  2. Slash-2CPU macrumors 6502

    Joined:
    Dec 14, 2016
    Location:
    New Orleans, USA
    #2
    Really, you have a much greater chance of doing more harm than good with aggressive cleaning. The usual end result is trapped moisture causing shorts or electrolysis or worse yet, dislodging a couple tiny surface mount capacitors.

    Blow the dust bunnies out. Leave the thin film alone unless it’s causing a real, definite problem.
     
  3. flehman macrumors 6502

    flehman

    Joined:
    Feb 21, 2015
    #3
    I recall reading that the areas with film might be from capacitors leaking. It is pretty common and not much to be done about it unless/until one actually goes, which might or might not ever happen.

    Last time I cleaned mine out was when the Northbridge rivets blew. I took it outside and hit it with compressed air. Anything more aggressive could do damage.
     
  4. barmann macrumors 6502a

    Joined:
    Oct 25, 2010
    Location:
    Germany
    #4
    I use a soft paint brush on the more delicate inner parts of my cMP , but very gently .

    Sometimes I'll also use adhesive tape to get dirt off - not the very sticky kind or anything that leaves residue, masking tape works well . Again, gently does it .

    Or putty - but only if you have the stuff that leaves no residue whatsoever .
     
  5. adonis3k macrumors 6502

    Joined:
    Apr 15, 2012
    #5
    I recently did this when upgrading the CPU on my nMP and it made a hell of a difference to the fan running louder! I used a small soft brush aswell and cleaned up alot of crap in there.
     
  6. Macschrauber macrumors 6502

    Macschrauber

    Joined:
    Dec 27, 2015
    Location:
    Germany
    #6
    Block the fans from spinning. Spinning fans will generate electricity and will harm the electronic in the fan or the board. I know it makes funny sound but thats not worth it :)
     
  7. OS6-OSX macrumors 6502a

    OS6-OSX

    Joined:
    Jun 13, 2004
    Location:
    California
    #7
    I use a damp paper towel on areas like the top/bottom of the memory cage, floor of the PSU and optical areas. Also, damp q-tips on the blades of all fans including GPU's. Air only on logic boards, the PSU and PCIe slots. This is done 2x a year.

    Spring Cleaning 2.jpg
     
  8. Slash-2CPU macrumors 6502

    Joined:
    Dec 14, 2016
    Location:
    New Orleans, USA
    #8
    Some of the film on the CPU tray is from the thermal pads on the VRM’s.
     
  9. W1SS macrumors 6502

    W1SS

    Joined:
    Aug 20, 2013
    #9
    I clean my logic and processor boards once a year using MG Chemicals 824 99.9% isopropyl alcohol electronics cleaner with a soft antistatic brush to remove/dislodge dirt then fully spray the boards one last time to let all the dirt and dust particles drip off the board. I then leave the boards to dry off naturally for 20 to 30 minutes followed by a final blast of warm air using a hair dryer.

    Result: boards that look brand spanking new!

    As for the case and fans, I first disconnect the fans then use an air blower to remove all the dust afterwhich I use a slightly damp cloth to clean the fan blades and case.

    I also clean the power supply by taking it apart and cleaning its internals thoroughly. I haven't had an apple part fail on me due to wear over the past 12 years so I must be doing something right!
     

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8 December 23, 2018