Replaced the transducer on my unit a couple weeks ago, and everything was working fine. Now graph reads fine if I do not hit the pedal. I can the turn the TM in either direction, and graph works. Once the pedal is hit, and TM is in motion, I get a fuzzy distorted screen (depth and temp still works) I let off and screen goes back to working properly. I have had this unit and TM on my boat for the last 2 years and have had no problems. I have not changed anything other than the transducer. Anybody ever had this issue before?