We have a 150 that we purchased from Phoenix several years ago & its always worked fine. Now, it won't display times. The LED's flash when power is first applied, per normal, but no timing data appears. We use Windows-based laptops running SplitSecond's Club software. In "Display Test" mode, the software is detecting the 150, so we assume that data is being sent. So why no display? Anybody have any thoughts?