R6350 AC1750 configure Wireless Bridge/Repeater

A couple things. 

1. usually the wire itself doesn't go bad unless something hits it. Usually its just an end thats bad. Have you tried replacing the ends on the wire? Might be something simple and will have better performance. 

2. each manufacturer tends to have their own naming schemes. In netgears "bridge mode" the router acts as a simple wireless bridge from the primary router to the netgear. It doesn't rebroadcast. It dedicates its wireless for the link. 

3. Repeater mode for netgear is just like it sounds. Acts as a wireless extender. It picks up the wireless signal and rebroadcasts it. You can also use the ethernet ports. I don't believe the R6350 has this mode but I didn't look up its specs. Netgear has been removing or not adding this feature into its routers lately.