OK unplug machine, plug back in push on button. unit should start if not and both red lights are on with no numbers or letters showing then you will need to replace the board assuming you have not already changed it. All new boards are built for multiple machines and have a selector switch on the back side. You have to look at the paper work that comes with new board for your model number and set switch to correct setting or the board will not know what machine it needs to control. Before you install a new board make sure you ground your self to the cabinet so there is no static electricity to transfer to new board causing it to short out.