Hey man, I ran into the same issue with the one I had 2 seasons ago. What I did was email into Marcum. Let them know I had a vx1 that appeared to be having issues with the transducer. What they told me (this is just what they did for me) was if I sent in my head unit and transducer, they would give me a 30% discount on a brand new unit. This was because they no longer make that unit or that transducer. That being said, that’s what they did for ME. I’m a nobody to them so it’s worth a shot to at least see what they say. I ended up taking them up on that deal and got an M5 for 30% off on their website.
Hope they can help you the way they helped me!