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LCD Lights up but no picture

Discussion in 'Hardware' started by Bascotie, Oct 31, 2011.

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  1. Bascotie

    Bascotie Thread Starter

    Joined:
    Sep 20, 2009
    Messages:
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    Hi guys,

    I am having difficulty troubleshooting an LCD screen for an HP Pavilion DV4 laptop. The screen lights up but not even the bios show up. It has a couple times but next time I try to turn it on, it goes away. An external monitor works fine. I disassembled and laptop, checked all monitor connections and they look fine..

    At this point, can I rule out a power inverter since the screen DOES light up?

    I want to say it is the cable going from the monitor to motherboard, what do you guys think? Thanks!

    Doing a little more research I found that this typically means a bad LCD CABLE or a bad MONITOR. Now, this is kind of urgent so I don't want to order both if I don't need to. Is there a way to test this without a spare =/?
     
  2. steve_qid

    steve_qid

    Joined:
    Oct 27, 2011
    Messages:
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    it could be the signal interface on LCD or video card as well. Not really a way to test aside from using a spare
     
  3. Bascotie

    Bascotie Thread Starter

    Joined:
    Sep 20, 2009
    Messages:
    301
    Yeah =/ Sometimes I wish I was an electrician too, then maybe I could test these things without needing a spare hehe
     
  4. Bascotie

    Bascotie Thread Starter

    Joined:
    Sep 20, 2009
    Messages:
    301
    Tried another LCD cable to no avail. Gave it back to the customer since I didn't have the time or resources to test out other components
     
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