2002 90 hp digital tach

Hi
First time poster as this is the first problem i've encountered. From time to time the entire digital tach doesn't operate. I checked the battery connections and everything else is functional. Is there a separate fuse for the digital tach? If so, where? Or is there another simple explanation.
Many thanks in advance.
Jim Discolo
jdiscolo@tampabay.rr.com

[jb123]

probably want to lubricate the connections on the back of the gauge

[boats.net]

The Yamaha guage harness does have a inline fuse on yellow wire between key switch and gauge.

Thanks for your suggestion. I tried that to no avail. Wondering if there is 1 fuse for the entire guage as its not just one of the functions not working, its the entire guage not functioning.

Didn't see your post about the fuse between the guage and the key. I will try that next.
Thanks
jdiscolo