Boom box speakers make a humming noise....was fine for the first year and a half, just suddenly starting doing it. The noise gets louder if I move my hand over and touch the top back part of the boom box (there's four screw like things in a square), so I assume it's some sort of a short? It only does that if I touch the top/back part, not any other portion of the boom box. Now, it only makes the noise after it picks up a signal from my radio, but it'll continue to make the noise, even if I take the radio out of the boom box. But if I turn the boom box on without the radio, it doesn't make any humming noise. Radio works fine anywhere else, so it's gotta be the boom box.
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most likely if its a hum it could be tires , if its a roar it could be the drive train
support the vehicle on jack stands , start the engine , put in drive and let it idle, if noise is gone ...its the tires if not check the drive train ...start with fluid levels
Often over the years the Transformer laminations can loosen, from the on/off rising and collapsing magnetic fields, and then they sorta hum louder. I suspect this is what is going on. Shouldn't be too much of a worry.. keep an eye on it tho.
Sounds like the audio amplifier circuit is bad. I do not know if where that is in that TV. If you were to hook a boom box or stereo receiver to the TV (via the audio out jacks on the TV), you could monitor the sound that way. If you get clean sound, then the problem is in the amplification circuitry. If you still get humming, etc., then the problem is further upstream.
Also, clarifying... the picture has not changed one iota, correct?
First try moving speakers away from monitor a bit. Some speakers magnets actually reduce the life span off monitor. I hope I am wrong but usually a high pitch whine is the High voltage Transformer. Costs more than the monitor. All you can do is continue use till it goes. Speakers usually deteriorate the tube itself. HVT are just one of those parts that go due to use. Hope it gives you more enjoyment before it goes. Good luck and try to have a good day.
Unplug the minijack from computer to hear if it still hums. If not test speakers at another computer. if it works fine on other computer the sounncard is generating hum noise. Common problem is usually the earthing cable inside the minjack that is touching L or R speakerwire due to bending of cable and breaking off insulation. If youre up to it cut off minijack if its moulde and resolder a new one on.
Hi Nate41
you won't do anithyng
may be is a bad resistor inside, that get hot and probably start to do this problem. try disconecting the speakers, and move to other place, more cooler, and try to see if you don't get the hissing and humming sound now. sometimes dust and hot places get to this problem.
beside that, may be a path to a problem.
This can be caused due to an increase in local interference. The hum is decreased when you plug in the satellites because the interference is spread over a longer area.
You may notice that speakers tend to hum around things like cell phones and power outlets. To see if this is the case, move the speakers to another part of the room if you can, slide the desk around, plug the computer in at another room, something like this. If the hum gets louder or quieter, it is interference at your new place. This can be solved by finding a new area to set up your computer stuff at. Since it's mostly the subwoofer, try elevating it off the ground, there may be a power main running under the floor.
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