Synaptic Package Manager

[geaves]

Hi, have installed on a laptop to try.....I always change my repository settings...easily done, but apparently not  :-[ always a first time 

Synaptic Package Manager>>>Settings>>>Repositories......nothing, cursor goes round for a few seconds then that's it. I've done the google is your friend and even RTFM...first for me  but I can't find a fix.

Thanks.