This HP Community is for Customer to Customer Product Support. First Time Here? Check Out Videos on How to Search, Register, Post and More.

Re: CQ70 LCD video cable design flaw flickering and shorting (1903 Views)
Reply
Honor Student
SeanDPC
Posts: 2
Registered: ‎11-11-2010
Message 1 of 4 (1,962 Views)

CQ70 LCD video cable design flaw flickering and shorting

[ Edited ]

I'm going to start off by saying I am a PC technician. I have been seeing this same issue more and more now with the Presario CQ series laptops and it is an obvious design flaw causing the problems. This is the first case I have seen however that was this bad, so it provoked me to make this posting. 

 

I know this is a known issue from reading just a few topics down in this forum:

http://h30434.www3.hp.com/t5/Display-and-video/HP-Compaq-Presario-CQ40-screen-flickers-intermittentl...

 

The above topic is most likely related to the same design flaw, assuming. The problem I am seeing is that the video cable that connects to the backside of the LCD screen and then runs underneath the left LCD hinge and to the motherboard is being pinched by the LCD hinge over time. The first signs of the problem, and the ones I see most often, are flickering of the video and lines running through the screen when the LCD is opened and closed to a certain angle and in some cases all the time until you find the perfect angle to leave the LCD positioned. I have been able to fix most of these issues simply by freeing up the video cable so it isn't being pinched anymore and then the video on the LCD looks great no matter what position the screen is in. However, this fix is only a band aid for the real problem. I always notify customers that there is a good chance this same problem will reoccur in time and unless the laptop is still under warranty, HP will do nothing about it. 

 

The laptop I am working on right now is even worse. In this case, the hinge actually frayed the wiring for the video cable so badly that it caused not only the video cable to short but also the video connection to the motherboard. I have pictures attached so you can see exactly what I;m referring to, the motherboard has been completely removed but you can see obviously where it shorted on both the cable and connection. 

 

IMG_0634.JPG

IMG_0632.JPG

 

What I am basically wondering is simple. Is HP going to recognize this as a design flaw and issue an extended warranty or recall for these laptops or at least do something for the customers that have been affected? Or, is HP going to try to sweep this under the rug like they did for the DV series motherboard issues for so long? I am starting to see more and more of these laptops now so I know this problem isn't just going to disappear, it's going to get worse. 

 

Please use plain text.
PhD Student
Knute
Posts: 1,329
Registered: ‎09-29-2010
Message 2 of 4 (1,933 Views)

Re: CQ70 LCD video cable design flaw flickering and shorting

No Offense to you, but I would take those pictures again with the motherboard OFF the carpet, I don't think it helps your case. Good Luck

________________________________________________________________________________________________________

  • I Love Kudos! If you feel my post has helped you please click the White Kudos! Star just below my name
  • If you feel my answer has fixed your problem please click 'Mark As Solution' and make it easier for others to find help quickly

  • Please use plain text.
    Honor Student
    SeanDPC
    Posts: 2
    Registered: ‎11-11-2010
    Message 3 of 4 (1,924 Views)

    Re: CQ70 LCD video cable design flaw flickering and shorting

    It's sitting on top of a carpet wrapped work bench. 

     

    I didn't realize sitting a dead motherboard on carpet made it worse either..... 

    Please use plain text.
    PhD Student
    Knute
    Posts: 1,329
    Registered: ‎09-29-2010
    Message 4 of 4 (1,903 Views)

    Re: CQ70 LCD video cable design flaw flickering and shorting

    Attention to detail man, thats all.  You say you are a computer tech, but I don't know of any tech that would toss a motherboard on the carpet, dead or not, out of force of habit. 

    ________________________________________________________________________________________________________

  • I Love Kudos! If you feel my post has helped you please click the White Kudos! Star just below my name
  • If you feel my answer has fixed your problem please click 'Mark As Solution' and make it easier for others to find help quickly

  • Please use plain text.