Hi all Went out yesterday and found my tachometer dead. Needle is resting @1000 rpms and unit is not recording engine hours either. I have a Yanmar3y30 engine. Any ideas on how to troubleshoot this before I buy a new unit would be appreciated. Thanks Crosby Roper VMD S/V Tethys#1054 Crosby Roper VMD Bay Park Veterinary Clinic