Lenovo T450s Thinkpad Screen Connectivity Issues

Recently I am experiencing bad connectivity on my LCD-screen. It seems to happen randomly and periodically. The connection is disrupted and a gray darkish void appears on the screen. Sometimes this can be ammended by moving the screen up and down but the bulletproof solution is to suspend the laptop and wake it up again, then the screen works properly. Sometimes for hours sometimes only for minutes. Last time I managed to remove and reattach the left hand side LCD-connector from the motherboard. This releived the problem for a couple of days, but now it's back again.