Hugh Chawner posted a discussion

Hello,I have a through hull B744V which was connected to a DSM25 and A60 MFD. The sonar function worked fine on the A60, except for one issue.If I started the boat engine, while the A60 was on, the depth (sonar) stopped working. It showed no depth reading.  If I then turned the A60 on and off, the depth signal came back.We quite often drift for plaice fishing, and turn the engine off during the drift.  This problem did not occur every time I started the engine, but about three times out of four. None of the other A60 MFD functions were affected by starting the engine.I have just replaced the A60 and DSM25 with a new C97 MFD, using the same transducer.The same problem occurs with the new C97 !Have you experienced this issue before, and do you know what might be causing it?ThanksHughSee More