A post with somewhat less details was http://www.cnet.com/forums/discussions/samsung-tv-apps-not-working-due-to-new-modem/ That already had two answers.
Anybody wanting to help please read that thread before answering here.
I was told by my cable provider that i needed a new modem because our internet speed would be increasing and the old modem would no longer work. I installed the new modem and now my apps (netflix, youtube, etc.) will not work on my Samsung UN40H5203AFXZA model tv. My network status and sertings say i am connected to the Internet. I called Samsung support and on 2 occasions was on the phone with them for 2 hours trying to fix the problem with them working on the problem themselves through the remote management problem. We tried every solution you can think of, wps codes you name it. Finally they determined it must have to do with the new modem. So i call time warner and we trouble shoot with new modem, the apps on the tv will work when hard wired straight into the new modem but will not when hard wired into the old router. All my other devices are connecting to wifi on my old router, the only issue besides the tv apps not working is my playstation 3 which is connecting to the internet thru wifi on the router but i have issues with the playstation store such as the tv apps. The support tech from time warner said that my old router needs to be configured to the new modem. My router is about 10 years old and time warner installed it when we switched from dial up to cable Internet. We never bought the modem or router and on our bill every month we have a charge for the modem but not the router. The tech gave me a technical support number for my router which is a D-link router by the way but the number is a support number that you have to pay for and you have to give them your credit card before you even ask a question. Ok now, can anyone help me? Does it sound like all i need is my router to be reconfigured and everything will be good or something else, alsi should i have to pay since i never bought the modem or router abd pay a fee for the modem monthly, i thought i did for the router too. WHAT SHOULD I DO NEXT? WHAT CAN I DO? WILL BUYING A BRAND NEW ROUTER FIX THE SITUATION? ARE THERE ANY TECHS I CAN CALL THAT KNOW ALL 3 (TV, ROUTER, MODEM) AND FIX IT FOR A PRICE SO I WILL BE DONE AND GOOD? PLEASE HELP, ANY HELP IS APPRECIATED.