Question about Sony FD Trinitron WEGA KV-BT21M40 TV

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Problem with headphone jack

I plug in my headphones to the tv but they jammed and the sound went off from the speakers.the round front metal piece is still inside, does anyone know how to fix this problem i will greatly appreciate it.

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It is very essential that you removed the plug otherwise the speaker will not work. inside the jack terminal is a sort of mechanical switch that whenever you put the plug it switches off the speaker and removing will returned to on position.

Posted on Mar 01, 2007


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Hi Cathy.. it sounds like you might be connected to the wrong jacks instead of the output that the headphones need.

Most high quality stereo headphones have a single 1/4" stereo plug that would readily plug into a 1/4" jack on the front of the stereo labeled "PHONES" or HEADPHONES".

Many lower quality "computer headphones" or headsets have two 1/8" plugs. One is often black or red and is for an included microphone that may be a boom type (shown below) connected to one of the speakers or an "in-line" type built into the cord itself. The headphone speakers in the headset get their signal from the other plug - which is usually green; but could be any color really. There should be 3 metal parts on the stereo headphone plug. The tip, the middle ring and the bottom ring. Many times the mic is mono (not stereo) and only has only a tip and a bottom ring on the plug. You can see stereo headphone and microphone plugs he picture below:

Computer Headphones or "Headset" with mic and phone plugs.

Your Yamaha stereo will probably NOT have 1/8" jacks to directly plug the headphone into. You can buy an adapter that you would plug your headphones into and then plug the adapter into the 1/4" jack on the stereo. One is pictured below:

Front and rear views of a "1/4" to 1/8" Stereo Adapter Plug" The front plugs into the stereo and the the smaller 1/8" headphones plug into the rear.

I hope this helps & good luck!

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When I plug in a headphone from the jack in the back the sound still comes out the speakers not the headpone. Element fxl-1910

Is your Headphones ok - Have you tried them on something else?

Is the plug on the headphones of the correct type and size?

If you mute the TV or turn down the volume - does this affect the headphone volume?

Also, Do you get sound out of the Headphones at the same time as the speakers?

If the above checks out to be OK - You may have a faulty Headphone socket in the TV.

Normally when you push headphones into a TV it usually pushes a piece of Metal in the head phone socket that disengages the speakers
The socket can go faulty

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How to find JVC AV27320 headphone jack? I've plugged into the avs(red & white) in the front panel as well as the extra ones in the back. Altho - I CAN hear the sound thru the headphones, The external...

This model doesn't have a headphone jack. The only JVC TV in the series that does is the model AV-20D202. For the JVC AV-2732, use the RCA audio out jacks with an RCA to 3.5 mm adapter to connect to the headphones. The front audio jacks are audio in (for the audio from a video camera for example).

When you use any external speakers or headphones through the audio out jacks, make sure to turn off the TV speakers. Press Menu and navigate down to TV Speakers (up/down arrows). Then use the right/left arrows to select Off and then Exit the menu. Make sure you scroll the TV volume before doing this. Note: if your headphones do not have a volume control they are a bad choice for this type of audio output.

You can find the manual for the TV here: .

I wish that I had better news for you.

Cindy Wells

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You can get a set of speakers that has a headphone jack on front (it will shut off the speakers when headphones are in) or you can unplug the speakers and plug in the head phones. Some PCs have a red and green jack in front - plug in headphones to the green, you should have the speakers shut off till you unplug. All else fails they make a headphone/mic extender that sits like a hockey puck on the desk, has cables to the mic and speaker jacks on back of the PC and on the puck part has a jack for speakers, mic and headphone - some switched manually by you, some switch when the headphones plug in. If you had posted the model I could see if your machine has front red and green jacks.

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1 Answer

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I had this problem as well. I would get sound from headphones but unplugging them I had no sound from the builtin speaker.

When you plug in your headphones it moves a thin piece of metal in the jack which interrupts a connection (this is a good thing) so it can know when to disable the internal speaker. When you unplug your headphones the piece of metal moves back and it enables the internal speaker again.

I was able to fix this by taking apart my x51v and bending the piece of metal a little while the headphones are plugged in so that it will contact better when the headphones are unplugged,

To take your axim apart there are 4 screws on the back underneath the rubber grips that you need to take out. Then you can just slide a finger nail up and down each side to remove the front and back of the casing. The back you will need to swing out from the bottom since it hooks over the headphone jack. I unplugged the small wire that connects the front half of the case to the guts using a tiny flat screwdriver.

Inside on the back, there is a black plastic plate that is held on by 4 more screws. Take that off.

Now you can see the headphone jack. I plugged in my headphones and used a small flat screwdriver to push against the headphone jack on the bottom piece of metal on the right side with the axim face down. You can observe the piece I mean by looking at the side of the headphone jack when you plug and unplug headphones. It moves perhaps 1/32 of an inch.

Your goal is to bend the piece of metal closer to where it is when no headphones are plugged in. The only way to bend it properly is to do it when the headphones are in.

Sorry if this isn't clear enough. I'm not sure if this is a permanent fix or not but it's worked for me.

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Do you have stereo headphones available? If so, try plugging the headphones into the computer. If both headphone speakers work then the problem is either in the monitor or the audio cable. If only the right headphone speaker works, then the problem is in the computer....probably a bent or broken contact in the audio output jack, or perhaps an incorrectly placed sound jumper on the motherboard.

Try to find another sound jack...for example, if you're using the sound jack on the rear there another one on the front of the computer?

Are you using the correct type of stereo sound cable? There should be three metal electrical contacts on the sound connector....a metal tip, a separate metal ring, and the metal sleeve. If there is only a metal tip and a metal sleeve with no ring...then you're using a "mono" cable that will only support one speaker.

If the cable and computer are ok, then your monitor probably has a problem with it's left speaker. You'll need to take it to a qualified computer or tv repair technician to track down the exact cause and repair it.

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