Originally Posted by
Philoctetes
That is good and is the strategy I would recommend.
NOTE - It REQUIRES that you use a LAN port on the second router.
rans6andrew as already stated that he is trying the WAN port (to the modem input connection of the secondary router).
By using the WAN port you introduce another NATter (Network Address Translation) into the situation. This will work for Internet browsing and email but will cause problems for say local printer access across the router.
I am not up to date with the latest wireless stuff but a few years ago (802.11a/b/g time), using the same SSID for both routers caused more problems in practise than it was worth and I would most likely use different SSIDs even though using the same one is somewhat seductive.
I don't know why the OP's one device isn't working unless it is an address conflict. He used the default address on both routers and there is just a chance it might work a bit if they ended up overlapping. Maybe one side is working with IPV6 and the the broken device does not support it?