I'm hoping for a B&G wizard to chime in with advice or a fix for my wind angle issues...
I've got a J/88 with a full suite of B&G instruments including an H5000 Hercules and 810mm VMHU. I recently had the MHU refurbished in Fort Lauderdale by Wheelhouse Marketing run by Jake Marantz. They replaced the entire cable due to corrosion and the wind speed bearing. The PCB was deemed good. It checked out on their bench and as I moved the wind vane, AWA changed correctly.
When I connect to my boat, the wind angle is not correct as AWA, TWA and TWD are all off (sitting at the dock, using a spare cable). To try and troubleshoot I measured voltages at the junction box and the cable that plugs into the H5000 circuit board. I get good readings at both locations which tells me voltages are getting to the CPU.
HOWEVER, using the B&G Websocket, the voltages displayed there are not the same as read with the multimeter. Blue is zero and Red and Green are different although perhaps in the ballpark. I did this for zero and 90 degs wind angles (measured by eyeball). You can see these in the attachment. I've confirmed the source selection for Measured Wind is the MHU and the MHU alignment is 0.5 degs. I've also tried reseting the CPU numerous times, no change.
Open for suggestions before I throw it all overboard and go back to a windex and compass.