Given that the ps3 has a 3 prong plug, this is likely to cause ground loop issues when connected to an a/v system which contains any other component that also has a 3-prong plug (large amplifiers, powered subwoofers, possibly a large tv). This could also be indicative of a faulty ground condition in the cable (tv) connection (which can be notoriously difficult to pin down or get corrected with the assistance of a cable tv technician).
Generally, what this comes down to is you have to break the ground connection in the offending 3-prong plug, using a cheater plug (available in a hardware store). Naturally, you won't find anyone who would tell you this is a good idea from a safety standpoint. So you have to use your own judgment as to if this is a suitable solution for you or not...do you want to run your ps3 buzz free or not?
Margot Robbie is THE most exquisite human creature on the face of the planet, in this moment in time.