Originally Posted by RyStr
Originally Posted by ATC7
I've posted this earlier, about a month ago but FWIW I'l post it again.
I went through 3 60GT50s in the spring, all of them buzzed horribly, where you can hear the buzzing at viewing distance over audio, even from 20 ft away. Returned all three and waited till last month when I got a 65GT50-2 and the buzzing on this unit is very subdued in comparison. Yes it still buzzes on bright/white screens but it's very hard to hear over even low volume audio, which is totally normal. It could be a total coincidence but my suspicion is that they may have tightened QA a little with the "-2" line. A total guess on my part of course.
set up the new (3rd) GT50 last night...no buzzing except as you say in bright white scenes or back grounds. Do you think this will go a way or quiet a bit after the tv break in period? Maybe th phosphors will not be burning/working so hard?
Unfortunately, no I don't believe buzzing subsides over time; you're stuck with the level of buzz the set has now. Having said that, buzzing is very normal in Plasmas when a high power draw occurs (e.g. during predominantly white/bright scenes). There are several technical documents from Panasonic and Pioneer (from when they made Kuros) that describe what causes it, and no it's not a loose screw somewhere although that has been on occasion the source of some form of buzzing.
I have yet to see a plasma that has zero buzz and I've seen a lot of PDPs. No everyone can hear the buzzing, as it varies with room environment, one's own hearing profile and it varies in strength and frequency which is why some people can't hear it. My wife for example, who has good hearing, cannot hear it unless she puts her head near or at the back of the panel. In my experience, normal buzzing should not be heard over audio from normal viewing position. If you can, then the set's buzzing is out of tolerance and should be looked at by a tech or have the set replaced.