Hi, we recently bought the water rowing machine model: RM-MKF901 and the exercise meter display has not been working for a few weeks now. I originally thought the batteries had died, but after inserting new batteries, nothing happened. I don't think it's a matter of the cables, as they are all connected, and after inserting the new batteries, the display does not show anything at all. I was just wondering what can be done to resolve this.Thanks