I worked for IT services on phone, one day a women called me and told me: "my monitor isnt working. after a while i found out that they have the same problem every morning. So i asked her what they normaly do when the problem appears. She: "we put the monitor to the floor and my coworker, shes very heavy, sits on it for a few seconds, afterwards its working again. I asked her why they dont do that now. She:"My coworker is now at holiday and i am maybe to skinny"??! I sendet them a TFT and told them not to sitting on the Screen again.