DVD player produces high-pitched noise while powered off ???

[AnitaPeterson]

Hi there, folks,

I asked about a good DVD player in this thread (http://forums.anandtech.com/me...=2237946&enterthread=y)

I got one from the store yesterday, and I'm really pleased with the PQ and features, BUT I noticed a very high-pitched noise - almost ultrasonic - coming from it while it's on standby. If I unplug the power cord, the noise disappears.

It sounds very much like the noise I used to hear from an Antec power supply which I had to RMA a couple of years ago... at that time, that was suspected to be a dying capacitor... I wonder if that's also the case here, especially since the noise is not uniform, I can hear variations in tone and volume.

Shall I return it immediately and get another one? Has anyone else experienced this?

 

[kalrith]

It's likely resonating with some other electrical component (thermostat, fan, light, wiring, etc.) in the room. Can you move it to a different room and see if it still makes the noise.

My receiver used to do this. As soon as I would turn it on or unplug it, the sound would disappear. It also only happened sometimes. On a day when it was making the noise, I adjusted the temperature on the programmable thermostat that was in the same room and directly across from the receiver. I noticed that there was a fluctuation in the noise when I hit the buttons on the thermostat. I turned off the thermostat, and the noise stopped. I just lived with it since I didn't want to move the thermostat or receiver. I moved to a different house in May and haven't heard the noise since.

 

[AnitaPeterson]

Good observation! I will play with the thermostat and I'll also take the dvd player to another room, to see if the noise is still there...