Honestly you cant fault the seller because its your fault. Unless the converter doesnt work (which it does) he’s has no obligation.
So what im saying is that you should actually do your own due diligence because in 2 seconds I searched on google on how to reset the ps3 video settings and found this: :p
Not trying to sound like an ass but sometimes I dont get why people spend all this time and energy asking others when if they searched they could find the answer themselves with that same energy and time.
For example this guy I know wrote me this long ass email with all these questions about surround sound. he wanted to hook his up because I told him about mine so he wrote a super long ass email. Funny thing was that if he just put those questions in google he would have got the answers himself. LOL