Why when I move the screen goes black or the image disappears?
why When adjusting the screen according to the comfortable position, it becomes either black, the image disappears, or annoying lines appear on the screen while it is on ?
I could be either a loose video cable connection at either end, motherboard or LCD panel, a damaged video cable where it passes through the hinge to get from the motherboard to the LCD panel or worst case a faulty LCD panel.
Here's the owner manual for the laptop.
Go to p.69 to view the procedure to remove the display assembly. This will allow you to inspect the video cable connection on the motherboard to ensure that it is secure and also to inspect the video cable where it passes through the hinge. If it all appears to be OK continue on with the manual to see how to remove the LCD panel as this will allow you to inspect the cable connection on the panel.
If the cable is faulty usually there is a part number printed on it somewhere, (maybe CN-0TC8Y3 but not totally sure about this), the same with the LCD panel. Search online using the part number only to find suppliers that suit you best.
Sounds like the video display cable is loose. You will need to check all the cables.
Download the Service Manual and the display assembly starts at page 42. Read and re-read several times to get a clear idea of all the parts.
Make sure you completely shutdown the laptop and disconnect the basttery before doing any work.
Be methodical, take your time and don't rush anything.
I given techinication Ic motherboard replacement option Dell 3521 laptop i3 4Gb Ram 500GB Hdd motherboard model LA-9104P replacement
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