I have the Link 2000 battery monitor at the nav station, it displays just fine but it would not let me use any of the buttons, just merrily displayed the voltage on bat 1. It worked for 2 weeks before doing this again, it happened 3 times with no common reason or trigger. Is the panel starting to fail from age, or is it posessed by Betelgeuse ? Can I threaten it with WD-40 ? Thanks in advance...