Hey all, first post here. I just purchased the TCP55ST50 a few days ago. I set it up and as soon as i plugged it in and turned it on i could hear a buzz coming from the TV. As with what most people have mentioned, the buzz gets increasingly louder as the brighter scenes come on. I know plasmas have the ordinary hum or buzz but the sound mine is creating can be heard up to 10-15 feet away while operating at around 15 volume. As i look at the back of the television, most of the buzz comes from the top right corner and around the mid height on the left. Here is a video of mine:
I went to the store i purchased it from and asked the sales person if i could do a test with one of the ST50's on display. I turned off all the televisions and any electrical device around the ST50. I put a solid white screen on the television and placed my head behind the screen much like i did in the video clip. I didn't hear anything other then the ordinary hum from the plasma TV.
Now if i could i would exchange the TV, but because London Drugs is sold out of all ST50's I am going to call Panasonic tomorrow and get a tech to look at my TV. I am hoping it is one of the loose screws on one of the circuit boards as in this video:
I really hope its a loose screw and an easy fix because other then the buzz which irritates the heck out of me, the TV has absolutely no issues.
I will update with what happens when the tech comes over and takes a look. If they say it can't be fixed then I will have to go get an exchange until i find one that works.