There is no such thing as a "new" replacement board -- it will be refurbished no matter where it was installed. The only truly "new" boards are the ones that come in newly purchased systems.  
Recently i had an issue with my laptop. So when i went to the service center and they said to me that my motherboard needs to be replaced. i didn't ask them whether the replacement is new or refurbished. But they did tell me to get a new one it will take 45 days as we need to order the motherboard. My query is there a way to know if the motherboard is new or not without physically examining it or do i need to ask for specific details when receiving the laptop from service center. Thank you in advance.
How to check if replaced motherboard is new???