Gary Gleason posted a discussion

My 5 year old display all of a sudden just went blank and now I have the dreaded 3 dashes and the flashing 0.0 intermittently. So I tested the common and the four colored wires at the junction box at the bottom of the mast with the results as follows:Common to red = 8 voltsCommon to yellow = 3 volts slightly fluctuating the wind was about 10 knotsCommon to green = about 7.25 voltsCommon to blue = about 5 voltsDoes this indicate a problem with the masthead unit?See More