Aspire E5-575G - How to differentiate between cracked LCD and loose cable connection?

jithoosin
jithoosin Member Posts: 1 New User
My 4 years old Aspire e15 ( e5-575g-5704), has vertical lines on screen as in image below. This is a common question in this forum. But what is not answered earlier is how to differentiate between a cracked LCD and loose cable connection? Is it possible to identify the difference without opening the LCD screen. Is it possible to make a best guess (with reasoning) with details numbered below.
  1. This is not a driver issue as I can see lines in both Windows 10 and Ubuntu 20.04. When the lines are visible, they appears in BIOS also.
  2. If I connect HDMI out to an external monitor, there are no lines in external monitor.
  3. Some times when I turn on the laptop, the lines are not visible. In that case, the lines appear after using laptop for a while.
  4. Before taking to service center, I like to know if this is cracked LCD or a loose connection. Is it possible to know preferably without opening the laptop?

Best Answer

  • JackE
    JackE ACE Posts: 45,080 Trailblazer
    Answer ✓
    >>>Some times when I turn on the laptop, the lines are not visible. In that case, the lines appear after using laptop for a while.>>>


    Based on this observation, the LCD video cable connectors most likely need to  be reseated  several times at the mainboard and the base of the screen to help clean the contacts. Also a somewhat lesser possibility is that the LCD cable itself has developed conductor trace breaks in the hinge area from wear and tear of opening and closing the lid too much. New replacement cables are usually less than $25usd

    In either case, the laptop must be opened to address the issue.

    Jack E/NJ

Answers

  • JackE
    JackE ACE Posts: 45,080 Trailblazer
    Answer ✓
    >>>Some times when I turn on the laptop, the lines are not visible. In that case, the lines appear after using laptop for a while.>>>


    Based on this observation, the LCD video cable connectors most likely need to  be reseated  several times at the mainboard and the base of the screen to help clean the contacts. Also a somewhat lesser possibility is that the LCD cable itself has developed conductor trace breaks in the hinge area from wear and tear of opening and closing the lid too much. New replacement cables are usually less than $25usd

    In either case, the laptop must be opened to address the issue.

    Jack E/NJ