Member Avatar for gupta0209

Hi.. I have an Hp PAvilion DM4. The laptop screen has been going faint/black wen started. IT looks like as if there is some wire which is loose, as when I insert a thick cardboard in between the gap of laptop and the screen, the screen is absolutely fine. As soon as the cardboard is removed, it is back to the blank/black colour.
Also, if I hld the screen and try adjusting it, the screen functions normally (when held in a specific manner)
Can anyone help me with this?

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Dani AI

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Observations from the posts: reports the screen goes black unless a cardboard wedge or a particular hand position is used to hold the lid — and suggested checking the internal display connection. Those are the key clues: the problem shows up when the lid angle changes, and a mechanical “wedge” fixes it temporarily. That pattern almost always points to an intermittent connection in the lid/hinge area (the LCD flex/display cable or its connector) or, less commonly, a failing LCD/backlight that changes behavior when the panel is flexed.

Quick, non-invasive checks to run or show to the repair tech:

  • Connect an external monitor (VGA/HDMI). If the external display is stable when the laptop screen goes black, the GPU/mainboard is fine and the fault is limited to the screen assembly.
  • With the laptop powered on and the screen “black”, shine a bright flashlight at the panel. If you can faintly make out the desktop, the backlight circuit is at fault; if nothing is visible, the data cable or the panel itself is likely the issue.
  • Reproduce the failure while the tech watches: open/close and gently flex the lid where the cable runs. This demonstrates the fault and avoids guessing.

What to tell a repair shop (what to ask them to check)

  • Ask them to inspect and, if needed, replace the LCD flex/display cable (sometimes called LVDS or eDP cable), check the cable routing through the hinges, and inspect the hinge for chafing or damage to the cable. Request they test the connectors at both the LCD and the motherboard. If the panel/backlight is bad they may recommend replacing the LCD assembly. Ask for a written estimate and a short repair warranty.

If you’re not comfortable opening the case, don’t force it. Back up important data before any repair and, if the laptop is under warranty, contact HP first.

Member Avatar for GABBY / LARRY

sorry about that....am actually new here..buh i think i can be of help...u would need to unscrew the laptop..its obvious that its the display cable,so check the display cable...the cable can be barely connected to the two different ends....if there are no changes please reply..no problem its called troubleshooting...

Member Avatar for gupta0209

Thanks for the help. I think i will have to take it to a computer shop.. as I am not very good at opening up electronic items. But thanks as now I exactly know what to tell the computer guy to correct. Or else they charge exorbitantly for no reason at all. Thanks!

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