Suddenly the LED display went blank and rev counter needle stuck at top ie 13k rpm the bike was idling and all was working as it should wtf happened and can i fix it? will disconnecting and reconnecting the battery help?
Oh dear. Check the connector that goes into the back of the dash is secure (with the ignition off, in case of voltage spike).
There are 4 fuses on the right side of the light casting on the inside of the nose cone. Remove the front fuse (D) in the handbook. Count to 10 and replace. See if that resets it.
Did you try the dash connector or the fuses? You said it was still running when the dash went blank - does it restart and run?