Originally Posted by bpd5
Just bought a 50" Panasonic G20 (12/26/10) and noticed a buzz as you mentioned from 15-feet ... I would highly recommend calling the customer service number in your users manual (877-958-4372) and open a ticket. They will forward you to the concierge service dept. who will schedule a time for a Panasonic tech to come and examine/fix your problem - I live in (SoCal USA) if that matters.
I called ... scheduled a time that worked for me (within 5 days) and the tech was here, panel open and examined. He measured the buzzing (43-45 db) and was coming from the coils located on the rear upper right & left corners. He said that was within the "normal" range but that people are sensitive to varying frequencies and that if I could hear it that's all he needed. While he had the set open he checked the rest of the set for issues and updated the firmware. Once the source was isolated he proceeded to cover the coils with electronic-grade silicone (black) which lowered the buzz slightly -BUT- more importantly said he had already ordered new boards to replace the boards that house the noise causing coils.
Anyway, I have a (30) day return policy from the store I purchased from so calling within that periods was my motivation to get this taken care of before 1/26/11. Bottom line - call panasonic and they seem to be aware of the issue and are ready and willing to help solve each issue.
Hope this helps.
Wow, must be nice to have your brand new panel cracked opened. It will never be as good as factory assembled and sealed.
Not to mention good luck returning it. They examine tv's first and they are trained to notice if it was opened. Can risk that you swapped something out.
As for the tech, he is some local repair guy that is panasonic authorized. He only gets paid if he finds an issue which is why even though he said it is normal, WHICH IT IS, all he did need was for you to have a gripe. He knows how to play the system. First he put crap on the coil ($$$) and then ordered a new board ($$$) which will have the same buzz, so he could come out again and replace it ($$$). I wouldn't be surprised if the paper work he sends panny has a louder decibel reading.
You should have sucked it up and lived with the pdp tech. Now your most likely stuck with the tampered with tv with things replaced and disassembled and reassembled just to be in the same boat as before as far as buzz. Don't recommend a fellow avs'r to make the same mistake. Again the tech even said it was normal. My advise try to return it for a fresh one before it's cracked opened again.