...bought an 82" Mitsu 82740. 1st 2 days it ran perfectly - could only hear the fan if you stuck your ear up to the back...totally normal. Day 3, however, started emitting a low buzzing noise from front & back of TV equally. Volume up or down did not affect the noise.
So I called Mitsu to tell them the problem. They told me it was "Normal fan noise". I asked them if it was normal why didn't I hear it the first 2 days. He said I need to give the TV some rest in between viewings. So, I said it started buzzing when I turned it on 1st thing in the morning day 3. So, then he said that fan noise will dissipate in time, but that it is normal.
3 days later, nothing has dissipated. So, I'm asking you here if this is normal? When I turn the TV off the buzzing noise remains for about 30 seconds. Then the buzzing noise turns off and the normal fan cooling noise (that I heard the first 2 days) comes on for about a minute.
I'm fine with that normal fan noise. But the buzzing sound is really annoying. I have to turn the TV up loud to drown it out, but I don't necessarily like having the TV that loud under normal circumstances. Any help would be much appreciated. Thanks.
TV = Panasonic P65VT50 Plasma Ass-Kicker
Receiver = Sony STRDH720 7.1 Channel 3D AV Receiver
BR = Panasonic DMP-BDT220 Intergrated Wi-Fi 3D BR/DVD
Speakers/Subwoofer = Martin Logan MLT-2 5.1 Channel
Game System = XBox 360, Wii
Cable = Bright House HD