Question about Panasonic PV-DM2792 Triple Play 27 in. TV/VCR/DVD Combo

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Good picture, but the sound is a static-filled hum

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Connecting different audio and video sources to the TV such as DVD player, Playstation, XBOX 360, etc. to check if the static still exists regardless of the audio/video sources connected to the TV.

Also try using different connections such as HDMI, component, etc. to check if the issue is with any particular connection type.

If the static still exists regardless of the audio/video sources and connection type then try resetting the TV to the original factory settings.

If the problem persists in all of the above mentioned situation then the speaker of the TV requires service.


Good luck!!!!!!!!!!!!!!!!!!!

Posted on Oct 01, 2009

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Posted on Jan 02, 2017

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Either one of your water valves isn't working properly, or the lines have sediment restricting the volume of water . What I would do is turn the water to the machine off and remove the water lines and make sure they aren't filled will calcium, etc. and look in the water valves where the hoses connect because that are, which has a screen, may be full of nastiness. If both those are good then the water valve solenoid(s) are stuck and won't open. The humming sound you hear lets you know the rest of the machine is working because the sound is generated by power being applied to the valve by the control.

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My home theater speakers make a constant hum whenever my receiver is on. The loudness of the hum changes with the volume control, and goes away entirely when the system is muted. All components are plugged...


jd40,
Sounds like a grounding issue. The first two places to look into is the powered subwoofer and antenna. During your last test, did you leave the FM antenna and subwoofer connected? Many times the hum is directly related to the antenna and/or the subwoofer and to how they are grounded; creating a ground loop through the receivers ground on the outlet. If the antenna is grounded to the dwellings wiring, hum is inevitable and sometime you can get a ground loop hum from how or how & where the subwoofer is grounded. Try taking them completely out of the loop.

Also try taking it further back to the basics, start with the receiver plugged into a known good grounded outlet with no surge or line conditioner in the loop and nothing connected to the receiver, nothing. Use one speaker and different wire to test each speaker output while in tuner and any other mode but phono. With no signal, you will either get nothing (no hum or static) or just static in the tuner mode. No hum is a good sign. Some systems will mute the speakers if no signal is connected to eliminate the static from being produced through the speakers but a ground loop hum will most likely still be produced even in mute. If you get a hum when nothing is connected to the receiver, try looking into getting a better grounded outlet, even maybe to a different dwelling.

-Chris

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1 Answer

Static humming from speakers


I've had the same problem and I think I've solved the problem. I noticed that they were fine when I first turned them on. After a awhile the blue light would flicker and static would start. I figured there might be some connection so I unplugged my speakers, took off the thin rubber from bottom and removed the 3 small screws. I carefully pulled the circuit board down, spotted the led light and snipped it off. I put everything back together, double stick taped the rubber piece back on, plugged it back in and have been listening static free for hours. Yippee, no more room full of screaming babies (that's what static sounds like to me)! By the way, I'm no expert. I just have a very strong aversion to static.
Good luck,
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1 Answer

I get a humming sound when I record a video


There a quite a few reasons why this could happen.

  1. The sound device could be malfunctioning.
  2. The cables are not plugged in all the way.
  3. The camera may be close to a noise maker such as a fan, air conditioner, or your PC fan.
  4. The sound wires could be crossed with an electrical wire which sometimes creates static or a hum.
  5. If you are using a normal Microphone, there could be static on the port or connector.
  6. The record volume levels are too high, or mic boost has been enabled and is picking up extra sound.
I hope one of these examples helps to fix your problem, if it doesn't, please get back with me and we can try something else. Good luck!

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For the "humming" noise, may need to replace the Power Supply board to fix it.

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No picture No Sound?? Tube is fine....


Hello MagillaG, You are getting off cheap considering that this hum may be from the IHVT, hopefully the hum is not for that component. Since you have no picture and no sound that denotes a power supply probme which can be anything from a blown fuse to a bad IHVT or the horizontal output transistor. $180.00 is about right.

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TV has a good picture but the sound coming out is nothing but static.


I have the same problem that just develop last week 0 ggod picture but audio is just static Did you find a solution yet?

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