Samsung Ltn140at20-301 Replacement LAPTOP LCD Screen 14.0" WXGA HD LED DIODE (Substitute Only. Not a) (FOR HP)

i have this TERRA Laptop with no picture but with extension monitor works the screen is always black ,,let's check if the screen is broken or shattered looks good except the line in the left side let's open it and see if all the connections are good remove the LCD panel to have access at the back of display backlight works the picture is there when i move the LCD and it means that we have a loose connection somewhere remove the lcd from the holders carefully remove the plastic protector layer reflow soldering the connector time to test it it doesn't start right away but than works very good