Problem with LCD panel FFC cable

[velasoraptor]

Hello,
i just run the trial of my LCD projector. but while working i found that the FFC cable(Flexible Flat Cable) that goes into LCD panel became loose and has poor contacts in some places due to which there are thin vertical lines started appearing on image screen.

if i push hold the FFC cable then the vertical lines disappears and display image is proper but as soon i realease the FFC cable to normal position again those vertical lines appear in image(& grows in nos)
so i think there is some loose contact of FFC cable with lcd panel.

can anyone help to resolve this issue?
is there a possibility to remove the FFC cable and re-insert again?

this is a secondhand(used) lcd panel; & i don't want to buy new panel for such type of risks.
Please help...

Thanks