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    GPU issue

    Discussion in 'Sager and Clevo' started by t6nn_k, Jul 31, 2018.

  1. t6nn_k

    t6nn_k Notebook Consultant

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    During a gaming session my Clevo P370EM3 with 980m SLI just powered off. After some investigation it turns out one of my 980m is the cause. Symptoms are strange as with that faulty card installed my power supply just turns off (green light turns off) when I try to turn ON the laptop. Makes a quiet click sound somewhere on the motherboard (no sound on the PSU) and it seems to change the location each try. Same when I try it with a battery+cable and same with battery (no cable).
    After reinstalling VGA drivers my laptop works fine with only 1 GPU.

    Has anyone had this sort of symptoms occurring?
     
    t6nn_k, Jul 31, 2018
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  2. Meaker@Sager

    Meaker@Sager Company Representative

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    Click and power off usually means it's detecting a short (failed chip bridging live to ground).
     
    Meaker@Sager, Jul 31, 2018
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  3. Danishblunt

    Danishblunt Guest

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    This means one of your cards is shorted, check out the mosfets first, they tend die be the most likely the die.
     
    Danishblunt, Jul 31, 2018
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  4. t6nn_k

    t6nn_k Notebook Consultant

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    Visually it looks fine. DSC_0014.jpeg DSC_0013.jpeg
     
    t6nn_k, Jul 31, 2018
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  5. Danishblunt

    Danishblunt Guest

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    Can you opload bigger pictures (external site such as imgur)? the ones you have here have a rather tiny resolution. Also that 1 mosfet for the vram looks unhappy to me from that 2. picture.

    also I assume you didnt use liquid metal right?
     
    Danishblunt, Jul 31, 2018
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  6. t6nn_k

    t6nn_k Notebook Consultant

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    t6nn_k, Jul 31, 2018
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  7. Danishblunt

    Danishblunt Guest

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    Bruh, the mostfet in the left top corner burned, what do you mean the card looks fine :p

    replace it and you might be good to go, aside from the PCB being a little black from the short caused on the mosfet it looks non damaged, so you might get away with an easy repair.

    [​IMG]
     
    Last edited by a moderator: Jul 31, 2018
    Danishblunt, Jul 31, 2018
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  8. t6nn_k

    t6nn_k Notebook Consultant

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    Hehe I was expecting deformed mosfet if that was burned. Hopefully it is just that. Thanks!
     
    t6nn_k, Jul 31, 2018
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  9. Danishblunt

    Danishblunt Guest

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    You see the thing about mosfets are that the inside can get damaged while the "shell" is absolutely fine. The moment you see a burned PCB you know something went down, regardless if the chip appears fine or not. While you're at it, you could possibly mod the card with multiple mosfets making it OC better and be more stable. You can consult @Khenglish for that, he made a mod like that to a GTX 980M.
     
    Danishblunt, Jul 31, 2018
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  10. Meaker@Sager

    Meaker@Sager Company Representative

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    That PCB does look a bit toasted too, clean it up and see if it's damaged further.
     
    Meaker@Sager, Jul 31, 2018
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  11. Danishblunt

    Danishblunt Guest

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    Looks like mostly discoloration, traces look fine. Should not be a biggie.
     
    Danishblunt, Jul 31, 2018
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  12. t6nn_k

    t6nn_k Notebook Consultant

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    Turned out that 3 mosfets was toasted indeed and replacing those was a cheap fix (50€).
    Other card (working one) had similar discoloration.

    Thnx for all the input!
     
    t6nn_k, Nov 22, 2018
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  13. Meaker@Sager

    Meaker@Sager Company Representative

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    May as well add the other three while at it.
     
    Meaker@Sager, Nov 22, 2018
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  14. t6nn_k

    t6nn_k Notebook Consultant

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    It took them over 2 months to source tha parts and repair it so I didn't want to push them. Glad it is working again.
     
    t6nn_k, Nov 22, 2018
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  15. Meaker@Sager

    Meaker@Sager Company Representative

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    2 months? Took me a week from digikey shipping internationally :p
     
    Meaker@Sager, Nov 22, 2018
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