Did you push the button up there that turns the display on and off when the vehicle is running? Have you read up on the resistor on the circuitboard up there that ususally makes it work by resoldering that resistor? :driving:
I have tried to check problem but the little resisters are gone so I must either get new ones ore replace the board, so what do u have and I don't need a bunch of stuff just the board of u want to let it go let me know how much hhh