I just received an ELO TOUCH SCREEN ET1545L-8UWC-1 that I bought on eBay. The monitor seems to being working fine, but when I move the monitor the lamp shuts off and then comes back on a few seconds later. It seems the slightest movement will trip the lamp. Is this a function of the monitor or might I have a loose connection? I'm planning on putting this in a jukebox.