Hi Fi lies

Bought a Sansui last black Friday. It's my 8 year old TV from 7 month everything I had load an put het Netflix on. Even her you tube then in October we try everything can't to wife. Took we waited 3 weeks and then they say it's the mother board . We ask them to switch TV on an go on WiFi. You can see it not led and they could get a remote it was in a volt.