C1760NW, can't see new wireless network

Hi

I just replace my wireless router and my printer can't find the wireless network from the new router, I have setup the wireless network with the same settings as the old router, I have upgraded the firmware on the printer and done a factory reset but it still can't see the new network but can still see the old wireless network, I have tried with no security on the new router but it still can't see the wireless network, I worked with the router support team to try and solve the issue but they couldn't solve it and recommended I speak to Dell, does anyone have any ideas how to resolve this? 

Thanks in advance

Jon