DFF1 sounder not powering on

[keepyaposted]

Hi everyone, so mich good information here, but cant seem to find my issue. I have a 1992 42 Ocean with the Furuno TZ Touch and the DFF1 sounder. We were out in some rough seas a few days ago and noticed the TZ touch MFD said something about sounder connection lost. Now it's not displaying as an option in my carousel of options on the MFD. I called Furuno tech and they ran me through some initial info, and come to find out there is supposed to be a blinking light on the DFF1 box that I found not to be lit up or blinking at all, which seemed to be that it was off and not power. I used a power probe and traced the 12v power wire and I do have a good ground and 13.2 volts in the wires coming into the DFF1 box but no light. Is there an internal fuse that maybe got blown somehow? Thanks!

 

[Johnny Electron]

The DFF1 has external fuses in the power cable.

 

[keepyaposted]

Okay thanks so much johnny, the way mine is wired up it seems a little strange I guess the previous owner had the wiring done where the black wire coming off of the power cable he has it cut open under the dashboard split into a black wire and a white wire if I remember correctly one being the positive one being the ground and they go right into a metal bar block with a bunch of other circuits and I don't see any fuses in line coming off of the wires that go to the block. Maybe I can unplug all the network cables and maybe undo the positive and negative off of that metal circuit block and redo everything maybe it will fire up. Super strange, I wonder if maybe somehow the Box just got fried or just stopped working suddenly. It was pretty rough seas but everything else seems fine