Problem connecting Samsung TV to wireless network

Hi,

I'm in despair. I have Samsung UE40C6000 TV with Sasung WIS09ABGN Wireless Lan adapter. Also, I have wireless router TP Link TL-WR741N.
I tried to connect my TV. It finds my network, but when testing a network it stops at pinging. TV finds my network, but that's all...
When I enter my security code it starts connectiong.. After about a minute of doing that it says something like: "physical connection is connected but it does not work. check your tv parameters".
I manualy entered all my data: ip, subnet mask, def gateway, dns server
and when testing connection it does the following:
Mac address OK
IP, sub..... OK
Ping - failed - "there's no connection to the router...."

After hours og googleing i found solution that SSID must be all numbers and try even that - changed my SSID to 123321 but - nothing changed

Help anyone...