I have a new solex 10 SI G2 unit. The SI, Bottom image and Nav all work good. But there is no indication of Depth. The bottom sonar page is blank with no indication. When selecting the bottom image it shows the depth on the RH scale . So I assume it's reading down. Looks like there is some set up problem with the sonar. Went over the set up with no help. Any suggestions would help , Thanks