Hello everyone, I bought a 1984 First 29 this year. It came with a brand new (I installed it) Raymarine i50 Tridata System. I installed it while the boat was in dry dock and once we launched the boat in June, it worked well until 2 weeks ago. It still reads the depth but no longer the speed ? Any ideas what I should be checking ? I installed the monitor and connected it to the existing wiring - I did not change anything else. Thanks for any info / experience. Chris
