That HDTV and such players don't have as good a wifi system as the Wii and laptops.
But first I suggest the router be setup as the defaults, a simple short alphanumeric SSID and then move to WPA2 AES for security.
Try channels 3 then 9 before you add more gear.
Bob
Recently purchased the Panasonic bdt210 blu-ray player with built-in wireless. I frequently am unable to maintain any type of connection with the br player. I have a Wii in the basement that seldom has a problem connecting to and streaming Netflix through the wifi connection. Centurylink is my provider. ZyXEL PK5000z is the modem/router. I have 1.5mps service. Is the problem with my service or with the bluray player? Is there a way to boost the network (powerline to direct ethernet bluray connection)? Any suggestions would be appreciated
Thank you.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic