LCD Lights up but no picture

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Bascotie

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Joined
Sep 20, 2009
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301
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 =/?
 
Joined
Oct 27, 2011
Messages
17
it could be the signal interface on LCD or video card as well. Not really a way to test aside from using a spare
 

Bascotie

Thread Starter
Joined
Sep 20, 2009
Messages
301
it could be the signal interface on LCD or video card as well. Not really a way to test aside from using a spare
Yeah =/ Sometimes I wish I was an electrician too, then maybe I could test these things without needing a spare hehe
 

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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