I have a 998 hd si and a 998 si. The hd at the bow won’t show anything on the side or down imaging screens and it’s stuck at 1.9 ft on the 2d screen but does show the palette colors. The si and down image screens are just black. I moved it to the console and it does not work there either. The si unit normally there works at both locations so it’s not just a bad transducer. I tried restoring defaults with no luck. It’s running the last, latest update, but I don’t remember the version. I tried to reinstall it but when I put the card in it just says it’s already installed and won’t reinstall. The mapping works fine but the casting rings don’t show anymore either. Is there anything I can try? It sounds like a software issue to me but idk. HB won’t work on them anymore and another place is a flat aprox $400 to repair. That’s well on the way to buying another newer model used sonar. Any thoughts are greatly appreciated. Thanks.