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Hum in the audio - 32'' Proscan 1080i

There's a very distracting hum/noise when any audio plays from the tv. The hum goes away when muting, and when the volume is at zero. The hum at level one on the audio graphic display is the same noise at any other level. My cable box does not have the ability to adjust volume, so it shouldn't be getting too much signal. Any ideas?

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  • ruckusmedia Jan 21, 2009

    would the "60 cycle ground loop" come on immediately? When the tv is first turned on, there is no hum. After a few minutes, the hum is loud enough to be a bother.



    My DVD player has audio hooked up to the stereo instead of the tv, so I can't compare it. Although, the hum is still present when watching the DVD unless the audio is muted. I'll try to disconnect the cable when watching a dvd and see if that works. Thanks.

  • CROD37 Feb 02, 2009

    IS THIS A NORMAL PROBLEM FOR MOST PEOPLE WITH THESE 32" LCDS?



  • ruckusmedia Feb 04, 2009

    One other note - I've connected RCA jacks out of the cable box to a stereo receiver. The hum is not present there. I think there is an inherent problem with the Proscan audio - I'm starting to see more and more posts online. The picture is fantastic, but the audio issue kills the presentation. I have the cable box and tv plugged into the same surge protector, but have not tried a different extension cord/surge protector. Although, I did get the same sound when trying it in a different place in my house. Frustrating.

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I used an extension cord with a ground connection. Three prong plug capable.
I connected the TV, cable box and dvd player to the extension cord and the hum disappeared.

Ground loop gone.

Posted on Feb 02, 2009

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Does the hum occur when playing a dvd or only when watching tv ? if the hum occurs only when watching tv, i would like you to disconnect the cable line from either the wall or the back of the cable box and see if this hum disappears. if the hum disappears call your cable company. you have what is called a " 60 cycle ground loop ". hope this helps.

Posted on Jan 21, 2009

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1 Answer

I have Insignia ns-p42q-10a tv, there is a loud hum when the volume is on when you mute the volume it goes away? Any suggestions?


check other inputs AVI, HDMI,,

do you here the hum on all inputs?

The hum maybe from a bad ground loop,, unplug all pluged in inputs, [dvd,games,radio,ect] <--check for hum.

If the hum is gone, plug inputs back in one at a time and test,,

When you find the source of the hum, go get a ground loop isolator to fix.

Mar 25, 2010 | Insignia NS-P42Q10A Plasma TV

1 Answer

My tv makes a low humming buzzing sound about 3/4 of the time. One quarter of the time it does not buzz. When it buzzes a line moves fairly slowly from the bottom of the screen up to the top continually....


there is a bad or what i call intermittant connection on the power supply board. when the bar and hum appears try firmly bumping with the palm of your hand the side of the set. if the hum and line go away then your set will have to go into the tv shop and the connectors on the p/s mod have to be reseated also the solder connections should be checked... this should help you a lot.

Mar 09, 2010 | Maxent MX-32X3 32 in. HD-Ready LCD...

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Humming or squealing noise when tv is turned on (model 32LG30)


Be sure you have installed the stand scresw weather or not you are using the stand.
The back panel can vibrate without the screws.

Other sources of a hum are the coils on the power supply.
The power supply would have to be replaced to solve the issue.

Jan 19, 2010 | LG 32LG30 32 in. LCD HDTV

2 Answers

Hum in sound volume


It could be a few things. The first thing you want to look at is make sure that the microphone is muted in the mixer controls of your audio cards. These settings are located in the control panel. If you need the mic, look under the advanced settings under it and disable the 20 db option for it.

If that doesn't work I have a few other ideas.

Mar 17, 2009 | Proscan 32LB30QD 32 in. LCD TV

3 Answers

My proscan is buzzing and pix is flickering when the power is on.


I found this solution on another review, hope it works
Model Number: Proscan 26" LCD HDTV w/ Built-in DVD Player26LB30QD "pro: good price, TV picture is clear and DVD player is compatible well.
con: sound noise
There was hum when I first turned the TV on, then I followed these instructions (found it from other review) to fix the hum issue:
1. Turn tv on
2. Input mode should be tv
3. Turn volume to zero
4. With remote enter 9 8 7 6
5. A menu will appear on left side
6. Arrow down to backlight and with right arrow key move number from 81 to 83, press menu button twice,
7. Turn up volume and listen if hum is gone."
It works,no hum."

Feb 26, 2009 | Proscan 42LA30H 42 in. LCD Television

1 Answer

I'm experencings a buzzing noise coming from the speaker when I turn on the tv....How can I get rid of this noise?


Give this a shot, it should fix the hum issue:

1. Turn tv on
2. Input mode should be tv
3. Turn volume to zero
4. With remote enter 9 8 7 6
5. A menu will appear on left side
6. Arrow down to backlight and with right arrow key move number from 81 to 83, press menu button twice,
7. Turn up volume and listen if hum is gone.

Let me know if this works.

Feb 19, 2009 | Proscan 32LB30QD 32 in. LCD TV

1 Answer

Poor sound quality


Hi, I sent an email regarding the issue to OnCorpus (the company who makes ProScan)

This is what I got back:

---------------------------
Thomas,
Follow these steps to correct humming issue:
1. Turn tv on
2. Input mode should be tv
3. Turn volume to zero
4. With remote enter 9 8 7 6
5. A menu will appear on left side
6. Arrow down to backlight and with right arrow key move number from 81 to 83, press menu button twice,
7. Turn up volume and listen if hum is gone.

John
jd@oncorpus.com
---------------------------

I can't confirm if this works at this moment since I don't have access to my TV.

Thomas

Feb 11, 2009 | Proscan 26LB30QD 26 in. LCD HDTV

1 Answer

There is a loud hum on my 32" AKAI LCD TV on all channels.


The humming noise is cause by defective capacitors in the power supply 12 volts line. These capacitors become defective due to the amount of heat surrounding them.
I repair these power supplies. If you need further assistance, write to jah2mil@hotmail.com

Feb 01, 2009 | Akai LCT2715 27 in. LCD Television

1 Answer

MY NEW SAMSUNG LN32A550 TV HAS A HUM FROM THE SPEAKERS


In most cases it's the Cable issue. Either bad Cable Box or the Wires are not grounded properly. Disconnect the Audio Cables or the COAX cable from the Cable Box and see if the Humming noise goes away.

Jan 31, 2009 | Samsung LN32A550 32 in. LCD TV

2 Answers

Humming


Hi,

More often than not, the humming sound on any electronic device is brought about by the AC side of the power supply not only of the device itself but also all other equipment it is attached to. In your particular case, it maybe introduced into the system from:
  • (coaxial) cable TV leadin;
  • connections of DVD, VCR, game consoles and others;
  • electrical noise from lamp dimmers, lights with electronic ballasts, wireless phones.
It is interesting to note, that the noise could be from other appliances plug in the same circuit as the TV, you of course could try plugging it into another outlet or branch. In some instances, you could even try filtered regulators similar to those used by desktop computers.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information. Good luck and kind regards. Thank you for using FixYa.

Nov 13, 2008 | Proscan 32LA30Q Television

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