Clevo X8100 startup problem

Discussion in 'Sager/Clevo Reviews & Owners' Lounges' started by SimoDj84, Dec 14, 2017.

  1. Bratzi

    Bratzi Notebook Enthusiast

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    So the chips and equipment I need arrived today, so that I can finally replace this chip. I started disassemblying the X8100 today and did remove everything that was covered in the service manual (https://www.manualslib.com/manual/1206694/Clevo-X8100.html). However there is no documentation on removing the motherboard.

    In addition to removing everything that was covered in the manual (hdd, ram, cpu, gpu, keyboard, bt, wifi, fans, covers, heatsinks, odd, ledbar) I also removed the screws I indicated in the picture below. Motherboard still can't be removed, so there are probably still some screws left I need to find tomorrow. If anybody has an instruction/video/manual on how to remove the board I'd appreciate it a lot. I searched the web, forums and youtube for a mainboard replacement of an x8100 (/np8120 or m980nu/np9850) and didn't find anything. And the x8100 seems to have lots and lots of ribbon cables that seem rather easy to break :/
     

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  2. Meaker@Sager

    Meaker@Sager Company Representative

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    Check that no cards/parts are still in and screws hiding below.
     
  3. Bratzi

    Bratzi Notebook Enthusiast

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    I've found the remaining screws and was able to seperate the motherboard. Man this thing has many connectors on it. I tried to document the screw locations and screw sizes if somebody finds this thread in the future. In addition to the images I removed the SATA adapters and every PCI mini card that was installed, but some of that is probably optional.

    MainboardRemoval.jpg

    I also added two pics of the motherboard. There are some changes between the v4 and the v3 that's in the manual. Most ovious differences seem that a heatshield was removed and a PCI mini slot was added. If anybody needs a picture of a certain part of the motherboard, I can take some at this stage :)

    NECTOKIN.jpg

    And here's the NEC Tokin chip (0D108). The CPU Backplate around it seems to be glued/siliconed on the PCB and it has small SMD parts around it. It looks much smaller than in the replacement guides I watched, which were mostly for Toshibas and had a chip 4x that big with no parts around and an easily-removable backplate. Should I remove the backplate or is it fine to leave it on?

    This disassembly took quite a while and it's quite late here, so I'll continue tomorrow. Thanks for all the help!
     

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  4. Bratzi

    Bratzi Notebook Enthusiast

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    Okay, I tried to remove the chip and it started out alright. Only the center part of the NEC chip was the problem. The lowest layer of it seems to have been so stuck to the ground pad that it ripped parts of it off (It apparently has one large ground pad, instead of two small ones like on the Toshibas). Any suggestions on how to proceed from here?

    TokinRemoved.jpg


    Also the x8100's chip is much smaller than the older NEC/Tokins. There is barely enough space for 4 caps (see attached picture).
     

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  5. senso

    senso Notebook Evangelist

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    It looks like that metal shroud is tall, so mounting the caps side-ways will gain you a lot of space.

    To rip that pad, you had to make a lot of force :/

    Clean up everything, find cooper tape, cut more or less to the size of the pad, re-solder the couple tracks that connected to the center of the pad, then solder the caps to it.
     
  6. Bratzi

    Bratzi Notebook Enthusiast

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    The ones circled in red are the ones that need to be connected, right? And the orange area should probably be treated with insulating varnish.

    Do you generally think it's worth a try or should I just get new board? What are the chances of damaging other components if it goes wrong (mostly worried for gpus and the display, cpu isn't that expensive)
     

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  7. senso

    senso Notebook Evangelist

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    Yes.

    Worst case you make a short-circuit and the cpu VREG will shutdown due to over-current, at most your CPU is at risk.
     
  8. Meaker@Sager

    Meaker@Sager Company Representative

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    If you have a multi meter I would buzz it out first.
     
  9. Bratzi

    Bratzi Notebook Enthusiast

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    Alright! Ordered some copper tape and a multimeter with continuity tester. Risking the CPU is okay. It's just a 720QM (~15€ on eBay). I was more worried about the GPUs, but I can probably completely remove those from the system for testing.
     
  10. Meaker@Sager

    Meaker@Sager Company Representative

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    Handy thing to have, just don't use the multimeter on the mains unless it's a known brand and properly CAT certified ;)
     
  11. Bratzi

    Bratzi Notebook Enthusiast

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    I went with a UNI-T UT139C multimeter for 36€ after I found several reviews/forums saying it's the cheapest they can recommend (while the issue with cheaper ones seems to be primarily safety concerns and not measurement accuracy). While the brand seems to have had some quality problems in the past, the newer models were reviewed to be well-built (at least that's what people said).

    The copper tape arrived today; the multimeter will arrive later this week. Was there anything specifically to look out for when buying copper tape? The one I bought listed these properties:

    The tape consisting a copper foil backing coated with conductive acrylic pressure sensitive adhesive.

    Product Feature:
    - Heat preservation, heat insulation
    - Waterproof, cold and heat resistance
    - Strong adhesion and easily peeled off
    - EMI shielding
    - UV resistance, flame retardant
    - Moisture resistance, chemical and corrosion resistance
    - Ideal for outdoor application and durable

    Application:
    - Single conductive
    - 30 mm x 1 Meters
    - Eliminate the effect of EMI
    - Avoid unnecessary current and voltage
    - Ideal for transformer, mobile phone, computer, PDA, PDP, and LCD monitor, PC, copier etc.
    - Self adhesive copper foil tape used in fridge, air conditioner, automotive, bridge, hotel, electronic industry etc.

    Product Features:
    Product Name: Single conductive copper foil Tape
    Material: Cu 99.98%
    Thickness of copper foil: 30 microns
    Total thickness: 65 microns
    Adhesive force: 1.5-1.3kg/25mm
    Temperature tolerance: -10'C---120'C
    Dynamics: 4.5-4.8kg/mm
    Elongation: 7%-4%
    Product Usage:
    Shielding Cavities
    The back of guitar pickguards
    Eliminates electrical hum and noise
    Replace tracks on electrical and printed circuit boards (can solder)
    Slug and snail barrier tape.

    I was a bit amused and confused when most places selling copper tape listed "snail barrier" and "decoration" as one of the main purposes.
     
  12. Meaker@Sager

    Meaker@Sager Company Representative

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    Well this kind of thing does have many uses in arts and crafts too :)
     
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