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    Asus G71gx no video and no ROG explosion??

    Discussion in 'ASUS Gaming Notebook Forum' started by jfkaiser, Sep 19, 2014.

  1. jfkaiser

    jfkaiser Newbie

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    Hi Folks,

    Hoping for some experienced help here with my friend's G71gx
    (I lost mine when some of the chassis clips fell inside and shorted out the motherboard)

    Anyway his laptop was working great..........was offsite at a meeting then shut it down normally and when back home and tried to boot it up............no video.......no ROG explosion noise........although the blue "button lights" on the
    top were all ON

    The LCD screen is VERY black and dead looking..........you can only see the blue case lights bleeding through from the front cover

    Tried hooking it up to an external HDMI monitor........no video

    I haven't been able to try an external RGB monitor yet to see if that will display or not.......will try that next

    I pulled all the memory and hard drives out of it and could hear the fan running etc but still no ROG explosion sound and no video

    I am thinking: dead inverter board or dead lcd.......????

    Any help appreciated

    Thx,
    Jon
     
    jfkaiser, Sep 19, 2014
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  2. Meaker@Sager

    Meaker@Sager Company Representative

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    If you get no external video the primary suspect is the gpu.
     
    Meaker@Sager, Sep 20, 2014
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  3. jfkaiser

    jfkaiser Newbie

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    Thanks for the response
    I hooked it up to RGB this morning and still no video so I think your suspicion about the video gpu is correct

    Ouch......$150-160 on eBay

    I hate to spend unless I know for sure

    Question: if I disassemble is there any way to confirm by inspection that the gpu is "done"

    Thanks again
     
    jfkaiser, Sep 20, 2014
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  4. Meaker@Sager

    Meaker@Sager Company Representative

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    Not always but if it decided to really go in style it may leave burn marks around a component.
     
    Meaker@Sager, Sep 20, 2014
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  5. jfkaiser

    jfkaiser Newbie

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    The interesting thing......now that I have the unit torn apart........is that I can feel the GPU warm from touching its heatsink

    Does this mean that the GPU is not fried....since its warming the heatsink? and that maybe my no video on screen and no video on external monitor is NOT caused by a bad GPU ?

    Thx,
    Jon
     
    jfkaiser, Oct 23, 2014
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  6. Meaker@Sager

    Meaker@Sager Company Representative

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    The gpu could still be drawing a current but if a single transistor is broken it will never produce a coherent output.
     
    Meaker@Sager, Oct 25, 2014
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  7. jfkaiser

    jfkaiser Newbie

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    Thanks much
    I am going to try a relplacement......figure its worth the $107

    Thx

    Jon
     
    jfkaiser, Oct 25, 2014
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  8. Meaker@Sager

    Meaker@Sager Company Representative

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    It usually is the cause. Make sure you have done a minimum boot test with no hard drives, optical drive and one ram stick.
     
    Meaker@Sager, Oct 26, 2014
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  9. jfkaiser

    jfkaiser Newbie

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    Will do
    Thanks much!

    Jon
     
    jfkaiser, Oct 26, 2014
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  10. Meaker@Sager

    Meaker@Sager Company Representative

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    Let us know how you get on, the more data on this sort of failure the better diagnosed it becomes in the future.
     
    Meaker@Sager, Oct 27, 2014
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  11. jfkaiser

    jfkaiser Newbie

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    Hi Guys,

    Just wanted to give a big "Thank You" for all your great advice on this forum !
    The video card was EXACTLY the issue and I am writing this from my friends now working G71gx

    Thanks much !!

    Jon
     
    jfkaiser, Nov 1, 2014
    #11
  12. Meaker@Sager

    Meaker@Sager Company Representative

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    No problem, i'm glad it's working again. :)
     
    Meaker@Sager, Nov 4, 2014
    #12