If you have a service manual, it says to check voltage & ground that is sent to the 20 pin combination meter connector. Do you plan on disassembling and pulling the meter panel yourself?
Are you sure about the fuses? The fuses with the black/brown and red/green wires are most likely. If it's not fuses, it gets rather involved and may be expensive. Although not specifically called for anywhere, it would be easy to disconnect the battery for a few minutes and reconnect it. Computers....sometimes they like that.
If you do the dis-assembly yourself, there are some voltage and grounds checks to make that may find a wiring fault. And (here's the good news) it is also possible that just disconnecting and re-connecting the combination meter could fix it. The bad possible connectors would be the 20 pin connector on the meter itself, a blue 12 pin connector & grey 10 pin connector under the left fairing pocket (in there somewhere), and on a real outside chance the main computer connector.
If you don't plan on disassembling and are going to take it to a shop, you are the mercy of a shop. New meters are expensive...$500-$700 plus labor. Hopefully the shop would be honest if they just find a easy cheap wiring fix or connector cleaning and only you charge for labor.
Used meters can be found on ebay, or you could save a little money and buy the meter internals and re-use the meter covers if you do it yourself. New meter internals (Meter Assy.) run $350 to $500.
Unfortunately past meter problem resolutions haven't been posted here. Either they aren't getting resolved, or shortly after developing a blank meter, people are being abducted by aliens. Good luck.