CF-52 Thermal Pads for CPU & GPU

Discussion in 'Panasonic' started by rmaich, Apr 10, 2018.

  1. rmaich

    rmaich Notebook Enthusiast

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    I am working on a CF-52 (CF-52MLBBD2M) that has begun to over-heat during intensive CPU activity.

    Software I've installed shows CPU temp peaks approaching 100 degrees C (and automatic shutdown).

    I suspect the thermal pads have degraded (age catches up to all of us), but I have not been able
    to locate any posts regarding the thickness of the thermal pads used (for CPU & GPU) in this model.
    (The fan runs at full speed during these peaks, so I don't think it is the cause.)

    If you know what thicknesses are needed, I'd appreciate any guidance you could give.

    Thanks!
     
  2. Shawn

    Shawn Crackpot Search Ninja and Options Whore

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    First of all, I would pull it apart and check the fan for dust.
    The first CF 52 you take apart is a challenge and will take an hour or 2.
    Pretty much has to come completely apart to gain access to the fan.
     
  3. Shawn

    Shawn Crackpot Search Ninja and Options Whore

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    A 52 might not have thermal pads. It might be grease only.
    I have had several apart, but I can't recall for sure.
    The service manual may tell us more.
     
  4. Shawn

    Shawn Crackpot Search Ninja and Options Whore

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    K303 DFMX1447ZA INSULATION SHEET CPU-ATI
    K304 DFMX1448ZA INSULATION SHEET PCH 1
    K305 DFHR3445ZA HEAT DISSIPATION RUBBER NRP
    K306 DFMY0533ZA THERMAL RUBBER NRP
    K307 DFMX1445ZA INSULATION SHEET DIMM 1
    K308 DFMX1446ZA INSULATION SHEET DIMM 2 NRP
    K309 DFMY0534ZA THERMAL RUBBER NRP
    K310 DFHR3P54ZA SPACER SHEET NRP

    CF-52MLBBDDM_FirstAid_1.jpg
     
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  5. rmaich

    rmaich Notebook Enthusiast

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    Thank you very much for your reply Shawn. Afraid I've never been in the bottom half of a CF-52 before. I've had CF-51s completely apart, but this is new to me. From your posting, it appears that it does use thermal pads, but I guess there is no way of knowing for sure what their thickness was when new (unless you happen to know this).

    I will definitely be checking for dust when I get it apart, but I wanted to order some thermal pad material before doing this, so I could put it right back together again. Even if the thermal material is not the primary problem, after so many years, it is probably contributing to the problem, and best to replace it while apart, I would think.

    Is the GPU in the same area? I'm thinking if the CPU material has deteriorated, the GPU material is probably about the same. I'm also wondering what the difference is between "Heat Dissipation Rubber NRP" and "Thermal Rubber NRP"?

    Thanks again for your help. Is there any chance of me receiving a copy of the service manual? I don't have it, and would feel a lot more confident in pulling it apart if I had one.
     
  6. Shawn

    Shawn Crackpot Search Ninja and Options Whore

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    pm me
     
  7. rmaich

    rmaich Notebook Enthusiast

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    Apparently
     
  8. rmaich

    rmaich Notebook Enthusiast

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    I can't
     
  9. rmaich

    rmaich Notebook Enthusiast

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    send private messages until I have 5 posts.
    So I will try now.
     
  10. rmaich

    rmaich Notebook Enthusiast

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    Unfortunately, I still have not been able to discover how to PM you.
     
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