ST60 Wind Display

[navyguy28]

Purchased this unit used (in Box) a couple of years ago, it was opened but never installed. When I finally installed the control head to my network via seatalk, as well as connecting all the cables as per the manual, the unit display is making a loud buzzing noise. None of the keys work nor do the back lights, the wind direction needle does not move and the wind speed indicator is blank. I am having a hard time finding a replacement display.

could this be a 12 volt power supply issue?

thanks in advance