I’ve had this TV for about a year, and it started buzzing a couple of days ago. It’s a Samsung 26".
I did some googling, and it looks like this is a common problem with all flatscreens, regardless of brand. The forums suggested changing video settings like contrast, since they supposedly draw more energy in making pixels darker or brighter. Tried that, and didn’t notice any difference. There is a noise reduction setting, which I set to High, but it didn’t change.
Since I’ve had it for so long, I’ve long since thrown away the receipt, and I’m sure I can’t exchange it. Has anybody else had this problem, and were you able to get it fixed?
Make sure the back of the TV isn’t too close to anything, and maybe try a surge protector or UPS that conditions the power. I guess a 26" TV probably isn’t plasma, but the info here could help.
This set is not one that was covered in the bulletin I was thinking of.
Still, it is likely a transformer or something in the switch-mode power supply that is buzzing.
Another possible source is the inverter for the panel lamps.I often fix issues like this with hot-melt glue.
And I missed the nuance in the comment about flybacks. Is that what is known a s a whoosh?
We recently bought a new TV (Samsung 37" LCD) and it made an intermittent buzzing sound. We upgraded to digital cable, and when the guy came to set it up, he said “I’ll take care of that” and did something to correct it while programming it.
Unfortunately, that TV broke after ~ 10 days. Fortunately, after a long hard fight with the store we got a replacement. Unfortunately, the new set is beginning to buzz again. Gonna have to try to figure out what the cable guy did…
In the situation I am describing, the choke is not the source of the noise, but it is the solution.
Unfortunately, Samsung chose not to share any more details. As I am pretty much deaf above 3 Khz, I could never hope to locate the actual source. I have, however, fixed a shitload of these and never had a callback.
I am not the OP, but thank you for the definitive answer. I hope that you remain on the board. It’s always a good thing to have subject matter experts here.
And now that I’ve buttered you up, can you tell us what you’d charge for such a repair? I’m curious about whether such a thing is worth it for such a set, given that it sells for $500 or so.
OK, that’s not bad. And a 26" set is small enough to fit in a car. So some consumer electronics issues are still worth fixing. I thought we were at the point that these things were disposable.
(Mind you, I remember having a black and white television in my parents’ house fail and when it stopped working, bringing all of the vacuum tubes to Radio Shack so we could test them on the machine and then buy the replacement for the defective tube for about five bucks.)
hehe well, I had no idea what you were meant when you talked about the transformer in switch-mode power supply, so that was just my wildassed guess. I take it this isn’t just something I can fix myself by taking off a panel somewhere and replacing a part?
