Question about JVC LT-26X506 26 in. LCD Television

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Loud, high pitched hum from speakers . . .

Re: JVC LT-26X506 - A fairly loud, high-pitched hum from both speakers of the set even when it's muted and disconnected from the HD cable box. The tv is about 3.5 years old and did not make this noise until after our last relocation 3 months ago. Could the mover's (mis-)handling of the set have caused this, or is the problem due to a faulty/aged component?

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This is GroundNoise from the TV's Backlight.

Sorry, but unless you are a Technician, you will simply need to ignore it.

If you are a technician, you can fix this by grounding the Audio ICs to the Power Supply (details not provided)

Posted on May 18, 2009

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What may cause a high pitch hum.even when muted or volume turned down?


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Jan 08, 2016 | Televison & Video

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High pitch hum


The mechanism need work and so bringing it to a tape deck repair shop is the only answer if you want it to work again. Check the reputation of the place you take it to on the internet- a lot of places charge money but never fix the unit.

Apr 09, 2014 | Audio Players & Recorders

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I have a 42 inch Hitachi plasma tv that is making a very loud static noice coming from the internal speakers. It stays at a contstant very loud volume unless I completly mute the tv or turn the volum


Based on what you have tried if a buzz or loud static via the speakers you have something wrong in the audio output circuit of the set--problem here is that circuit may be part of the Main board that processes all signal---a look inside---following the speaker leads back would lead you to that board.

A simple thing to do to narrow it a little (you may have done this) is with sound all the way off put your ear to the internal speaker--hear anything at all like a deep hum?

Depending on age of set and cost of the board likely bad it may or may not be a do it yourself repair.

SD TECH

Apr 26, 2012 | Hitachi P42H401 42 in. Plasma HDTV

2 Answers

There is a loud hum when volume is on low to high


go to control panel
sound and audio devices
voice
under voice recording clk volume and mute the mic phone...........
or
some how your mic is conflicting with speakers. Keep your mic away from your speakers..

Do reply if this woks

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1 Answer

A high pitched loud hum (about a C) is coming from the freezer


That is your compressor. The bearings in them go bad and overheat. Sometimes it will even keep the compressor from restarting. You need a compressor.

Sep 05, 2009 | Frigidaire FRS23R4A Side by Side...

1 Answer

I have a set of wireless speakers which when


The hum is generated by incompatible Ohmage
one is 8 ohm the other 16 and it is overdriving.

If that does not appear to be the case then there is some lack of shielding on the plugs to the JVC.

But i would punt for the first option

Sep 05, 2009 | Televison & Video

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LOUD BUZZING/HUMMING SOUND- CAN HEAR OVER AUDIO


have someone check speaker ground to the TV chassis. Your speakers are picking up reverb from the Video Signal.

Aug 19, 2009 | Vizio L37 Television

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They are makeing a constant sharp noise a loud high pitched hum if you will


Right-click on the speaker icon in the lower right of your screen and choose Open Volume Control and check all volume levels (make sure they are not set to high). If this doesnt work then when you right-click, choose Adjust Audio Properties and search around for volume controls (maybe try the Speaker Volume button).

Aug 04, 2009 | Audio Players & Recorders

1 Answer

JBL d110 /w no sound output


There is a standby indication that activates after 10-15 minutes without any input signal. I suspect that might be what the red light is telling you - no signal.

Loud hum from a loosened cable is normal as hum usually means there's an ungrounded connection somewhere acting as an antenna and the amp is doing its job to amplify what it thinks is a signal, in this case 60hz stray ac current is being sensed nearby. It's a good sign that you get hum from the sub because that means the amp is alive.

Avoid manipulating cable connections with the Sub or Receiver turned on as you could introduce a static spike that could harm any connected equipment.

Are you certain a bass signal is making it into the sub? The complexities of modern AV receivers vary in how you configure them to direct LFE to a sub. Bone up on that end of the chain.

Or, just hang a CD player on the Inputs of the sub and play something with a reassonable amount of Low Frequencies.

>>>> Be advised that this way of testing has NO VOLUME CONTROL because amps without volume controls always operate at maximum gain, relying on your external controls to attentuate it (hence, the loud hum from a loose cable); so choose a track that eases into the loud parts with some quiet parts up front and BE READY TO PAUSE THE PROGRAM AT ANY SIGNS OF STRESS. <<<<

A living sub will produce only muffled rumble in the absence of other speakers producing the higher frequencies which carry the intelligence of the signal. If that works, back to the receiver for settings. If not... sigh.

-----

For hum problems, even those you cause yourself:

Disconnect all inputs to see if that helps. If it goes away start with the signal cables and add in things until it comes back.

Sometimes the reversing the orientation of the AC plug can help with hum. Or it could be something like a loose or high resistance connection internal to the sub. Good luck.

Jun 17, 2008 | JBL PSW-D110 Speaker

1 Answer

High-pitched noise


Could you specify if noise is coming from : - The freezer - The outside back of the refrigerator - The bottom of the refrigerator

Jun 13, 2006 | Smeg FAB28

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