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Treehorn Top Student
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dv6 lid hinge sensor not working

Hi, I have a Pavilion dv6 that's around 2 years old.  No problems until recently when my screen started going blank (like it does when the lid is closed) unless I close the display lid to around a 45 degree angle.  Once I do that the screen lights up and I can move the lid back to a regular viewing angle for times varying from 10 sec to 1 min before it goes dark again.  It started as a one off thing and has progressively gotten worse.  The computer still works when the screen goes blank.  All my power managment / display settings are set to never turn the screen off.  I've read about problems people have had with the left hinge breaking.  Mine has not cracked.  Sometimes when I'm moving the lid the display will glitch and skew the image or distort the colors, but only when I put pressure on it in the right spot in the right way.  Any advice?  Thanks.

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Distinguished Professor
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dv6 lid hinge sensor not working

Hello Treehorn,

 

When using the laptop the screen will sometimes go black, is that correct? I will try to help you with this issue.

 

Perhaps the panel screen cable may be loose. Can you please provide the full model number for the DV6 that you have, if you aren’t sure where to locate that information have a look at this document.

 

Please respond back at your earliest convenience.

Thanks

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Treehorn Top Student
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I'm not entirely sure what you mean by "full model number", but I suppose the product number will work?  QJ918AV#ABA

 

I'm fairly certain it's a hardware issue, not software.  Some kind of connection or sensor is loose or semi-broken.  It has something to do with the hinge for the screen/lid, just not sure what exactly. 

 

Thank you for responding!

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dv6 lid hinge sensor not working

Treenhorn,

 

Thank you for that information.

 

I tend to agree with you regarding the hardware issue. What you can do if you feel comfortable is to break the computer down and check the panel cable to see if loose or has any breaks in the line. Now if the computer is still covered by warranty I would recommend you let the warranty take care of the issue, instead of accidently voiding the warranty.

 

If you decide to break the computer down here is the service manual, and the instructions are on page 93.

 

Please respond back at your earliest convenience.

Thanks

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Treehorn Top Student
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Thanks for the advice.  My laptop is no longer under warranty, so I took a stab at fixing it myself.  The instructions you provided were good, I was able to take it apart and check the cables.  Nothing seemed wrong.  After putting it back together, I still have problems.  At startup it seemed to work ok, but within a minute the screen when blank again.  After that, I have only been able to get the screen to work when the lid is open 45 degrees or less.  Before my fixing attempt, I would have to move it to that position to get it to work but then I could move it to a normal viewing angle and it would work for a minute or less before needing to be "reset" at the 45 degree position.  The only improvement my attempted fixing made was to stop the screen from getting distorted if I put pressure on it the wrong way when moving the lid.

 

Do you have any other ideas?  Is it possible it has something to do with the magnet sensor in the lid?  Why would the angle of the screen matter?  I was under the impresion there was nothing special in the hinge itself...

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Treehorn Top Student
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Ok, I did some more experimenting and it's definitely a cable issue.  If I need to reorder one, is there a way  you'd recommend?

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Treehorn,

 

Your computer has the possibility of having 3 different types of cables. Below is a screenshot from the service manual, which description does your computer match?

 

panel cable.PNG

 

 

Please respond back at your earliest convenience.

Thanks

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Treehorn Top Student
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Ok, I got a new cable and installed it.  Now my screen is working again.  Thanks for all your help!

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Treehorn,

 

Good deal thank you for confirming your issue resolved.

 

Have a great day.  

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