right side start stop button not responding

When I press play nothing happens I can press play in serato dj and it works fine. I midi mapped it to work with one of the saved loops pads as I don't use this feature. The platter starts and stops like normal that way so it is not an issue with the platter. just the start stop button its self. Can anyone help me resolve this issue or do I need a new button or send it in for repair?