Okay so I been having my ps3 for a couple months now, it is a refurbished one and up to right now its been working very nicely. But the thing is it will occasionally make this weird noise like if someone was blowing into a straw, now I don't know if its my ps3 or my tv. When that noise does occur, it does not freeze up my ps3 or cause any other problems. What do you guys think that noise might be? it sounds like someone blowing into a straw, and it only lasts for 2 seconds.