i turned it on and i was so happy, no buzzing at all!!!!!, i turn it off take a shower, get on my couch turn it on again and i hear buzzzzzzzzzzz. Its not as loud as the first one i got from amazon but i still hear buzz. If i have the volume on i cant hear a damn thing only when on mute. Question is guys should i keep this one or exchange it for another tv, also i am new to plasmas so could you tell me if its common for all plasmas to buzz?