I just purchased a NT GX 2.7 upright bike, assembled it, connected it to AC and tested it. It works really well. The problem is the display it doesn't turn off AT ALL. Not even after 3 hours. The manual says that after a "few minutes" of not being used (not pedaling or touching a button), the display should turn off by itself. Mine doesn't. This is really annoying, since it's in the my bedroom and I do want the display to turn off as it supposed to. Please advise. Thanks.