Hi I have 2005 seedoo wake ski. On 1st ride out my ski suddenly stopped dead in water and wouldn’t restart at all. When trying to start battery wouldn’t work sounded like it was flat even though it’s very new. . Also Temperature alarm showed on dash. Ski has had new jet pump fitted recentlyand had just had steering through hull but replaced last week. I have checked and all fluids are full. Any help ideas greatly appreciated