No audio when connecting laptop to TV via VGA cable

Found 17th Jun 2010
Hi,

Was wondering whether anyone knows the reason why the TV does not have sound when I have connected it to the TV. Instead the sound is still coming from the laptop. Do I need a seperate audio cable and if so, which one, and how would I connect it? From the headphone part on the laptop to what part on the TV?

Would appreciated any help on this,
Thanks

  1. Misc
  2. Laptop
  3. TV
43 Comments

Banned

yes you will need an aux cable to plug from the pc headphones into the tv headphone slot

vga is not for audio
what connections does ur laptop have

the vga cable is for picture only, you need to connect the headphone socket to the tv for sound

VGA is for video only, you will need a separate cable for audio as you say.

Original Poster

thedealsealer;8861722

yes you will need an aux cable to plug from the pc headphones into the tv … yes you will need an aux cable to plug from the pc headphones into the tv headphone slot



SOSAGES;8861723

vga is not for audiowhat connections does ur laptop have



wickedteen;8861725

the vga cable is for picture only, you need to connect the headphone … the vga cable is for picture only, you need to connect the headphone socket to the tv for sound



Babbabooey;8861731

VGA is for video only, you will need a separate cable for audio as you … VGA is for video only, you will need a separate cable for audio as you say.



Thanks for your replies
I tried plugging a cable from the headphone socket and then put the yellow and red wires into the "audio in" parts in the back of the TV. But it doesnt work
So either the cable is wrong, or Im connecting it to the wrong place :S, very confused!

yellow will be video again, try white/red.

http://www.creativecomputing.net/catalog/images/CB-3.5mm%20phono.jpg

Banned

or

http://img.alibaba.com/photo/11730506/Audio_Extension_Cable.jpg

Original Poster

thank you gonna try the white & red now and will report back...

J_B;8861783



Would have thought that you'd need one of these instead. That probably only works when on av channel, not VGA.


thedealsealer;8861807

or

Original Poster

well i tried plugging the white and red into the audio in part at the back of the tv, but its not working.
I think I am plugging it in to the right area of the tv, as it specifies audio in, and asks for the white & red cable
so i just think the cable I am using is old so I will try with a new ones. Would this be a suitable cable:

amazon.co.uk/3-5…e_2

Original Poster

Benjimoron;8861939

Would have thought that you'd need one of these instead. That probably … Would have thought that you'd need one of these instead. That probably only works when on av channel, not VGA.



Sorry which one are you saying I should use?

Yep, it'll do fine.
The chances of your current cable being faulty are pretty slim though.

24601;8861980

Sorry which one are you saying I should use?



The 2nd one.

Original Poster

Babbabooey;8861984

Yep, it'll do fine.The chances of your current cable being faulty are … Yep, it'll do fine.The chances of your current cable being faulty are pretty slim though.



The one I am using at the moment has a yellow input aswell, not just red & white, not sure whether that makes a difference :? Not sure if it is the right cable, just found it, and thought it might be suitable
I hope that all that i need to do is buy a new cable, as may have to then get hdmi cable which i think gives audio aswell

Original Poster

Benjimoron;8861989

The 2nd one.



Oh ok thanks, would you mind telling what that cable is called, I dont recognise it

24601;8862035

The one I am using at the moment has a yellow input aswell, not just red … The one I am using at the moment has a yellow input aswell, not just red & white, not sure whether that makes a difference :? Not sure if it is the right cable, just found it, and thought it might be suitable :(I hope that all that i need to do is buy a new cable, as may have to then get hdmi cable which i think gives audio aswell



Not very many pc's do audio over HDMI I think?

Try one of the cables I said, only cost you a quid or so to try.

amazon.co.uk/gp/…294

53p delivered.

Read the reviews, you'll probably find a better one. Get a gold one if it works for you.

Check the manual for the TV to see what audio jack goes with the VGA input. It is most likely red/white RCA cables as you have tried, the yellow cable is for video, leaving this unconnected will make no difference to the audio signal.

BTW, before you buy the cable Benji is mentioning, ensure that this will actually work. Most TV's I have come across only use the headphone jack to output audio.

24601;8862035

The one I am using at the moment has a yellow input aswell, not just red … The one I am using at the moment has a yellow input aswell, not just red & white, not sure whether that makes a difference :? Not sure if it is the right cable, just found it, and thought it might be suitable :(I hope that all that i need to do is buy a new cable, as may have to then get hdmi cable which i think gives audio aswell



Your problem is that the audio and video in requires switching the TV to one of several AV modes. If you switch it to use VGA, it will not be accepting input via composite AV input (ie. your yellow, red, white input sockets). If you switch it to AV input, then it will not accept a VGA signal as it is switched out of VGA mode and will be attempting to display a video feed into the yellow socket (which is composite). Why not connect your laptop's line out or headphone socket to external speakers, or even your hifi?

Original Poster

Benjimoron;8862057

Not very many pc's do audio over HDMI I think?Try one of the cables I … Not very many pc's do audio over HDMI I think?Try one of the cables I said, only cost you a quid or so to try.



Benjimoron;8862064

http://www.amazon.co.uk/gp/product/B00077DC3S/ref=s9_simh_gw_p23_i5?pf_rd_m=A3P5ROKL5A1OLE&pf_rd_s=center-1&pf_rd_r=14SQB9N0QG8157NCS9X6&pf_rd_t=101&pf_rd_p=467198433&pf_rd_i=46829453p delivered.Read the reviews, you'll probably find a better one. Get a gold one if it works for you.



Thanks for that going to read the manual to see where to plug that in the tv, because im guessing it will not go into one of the red&white inputs.

PhearFactor;8862079

Check the manual for the TV to see what audio jack goes with the VGA … Check the manual for the TV to see what audio jack goes with the VGA input. It is most likely red/white RCA cables as you have tried, the yellow cable is for video, leaving this unconnected will make no difference to the audio signal.BTW, before you buy the cable Benji is mentioning, ensure that this will actually work. Most TV's I have come across only use the headphone jack to output audio.



Yeah you're right, the red and white still didnt work regardless. What is confusing is that it is labelled "audio in" so I thought that this was the correct port. Im going to check the manual now as you suggested and see if it helps. Thanks!

Just re-read the thread, you'll need an audio in socket, not a headphone socket on the tv.

It will look the same as a headphone socket..

24601;8862136

Yeah you're right, the red and white still didnt work regardless. What … Yeah you're right, the red and white still didnt work regardless. What is confusing is that it is labelled "audio in" so I thought that this was the correct port. Im going to check the manual now as you suggested and see if it helps. Thanks!



When you have connected the cable up, does the sound still output from the laptop speakers?
Need to make sure the laptop isn't the issue here hehe.

Usually though, if VGA is accepted it will have an accompanying audio jack(s) although they may be on the side of the TV rather than the back. Although sometimes the side red/white jacks are used for output. As has already been said, the chances of the cable being b0rked are slim.

Good point, when you plug the cable into the laptop the sound should stop coming from the laptop (whether the sounds comes out of the tv or not).

Have you got it in the headphone socket of the laptop?

Original Poster

PhearFactor;8862181

When you have connected the cable up, does the sound still output from … When you have connected the cable up, does the sound still output from the laptop speakers? Need to make sure the laptop isn't the issue here hehe.Usually though, if VGA is accepted it will have an accompanying audio jack(s) although they may be on the side of the TV rather than the back. Although sometimes the side red/white jacks are used for output. As has already been said, the chances of the cable being b0rked are slim.



no when i put the cable in the sound from the laptop goes
i read the manual, where it points out the VGA area on the tv, and it says the audio is meant to go below that, connected from the headphone area on the laptop. The tv as far as I can see doesnt have a headphone like port, but the audio area in manual expects a red and white jack

Benjimoron;8862194

Good point, when you plug the cable into the laptop the sound should stop … Good point, when you plug the cable into the laptop the sound should stop coming from the laptop (whether the sounds comes out of the tv or not).Have you got it in the headphone socket of the laptop?



yep sound stop coming out laptop

Im gonna try new cable, although as you say chances are slim

If there's no 3.5mm audio in then the cable I said won't work.

Very unlikely to be anything wrong with your cable.

What's your tv model?

Original Poster

ElliottC;8862105

Your problem is that the audio and video in requires switching the TV to … Your problem is that the audio and video in requires switching the TV to one of several AV modes. If you switch it to use VGA, it will not be accepting input via composite AV input (ie. your yellow, red, white input sockets). If you switch it to AV input, then it will not accept a VGA signal as it is switched out of VGA mode and will be attempting to display a video feed into the yellow socket (which is composite). Why not connect your laptop's line out or headphone socket to external speakers, or even your hifi?



yeah i guess that is an option, although i dont really have external speakers. Was looking more for cables connecting the two, so will try some suggested in this thread. Thanks for your advice

Original Poster

Benjimoron;8862340

If there's no 3.5mm audio in then the cable I said won't work. Very … If there's no 3.5mm audio in then the cable I said won't work. Very unlikely to be anything wrong with your cable.What's your tv model?



Panasonic TX-26LXD70 :thumbsup:

Maybe it doesn't have it?

"Composite Video Input: AV3: RCA phono type x 1 (front)
S-Video Input: AV3: Mini DIN 4-pin
Audio Input (for Video): AV3: RCA phono type connectors (L, R) (1 set, front)"

"PC Input: Mini D-sub 15-pin x 1 (rear)"

Just inspect the cable you have got for any cuts/broken areas. Those types of cables are very easy to make/repair. Although they are very cheap, so you could just order another and try. The only thing I can think of to try now would be audio options on the laptop in the control panel and maybe audio settings in the menu of the TV.

Benjimoron;8862435

Maybe it doesn't have it?"Composite Video Input: AV3: RCA phono type x 1 … Maybe it doesn't have it?"Composite Video Input: AV3: RCA phono type x 1 (front)S-Video Input: AV3: Mini DIN 4-pinAudio Input (for Video): AV3: RCA phono type connectors (L, R) (1 set, front)""PC Input: Mini D-sub 15-pin x 1 (rear)"



Yep, audio input is to be used in AV mode only rather than PC mode.

24601, if you switch the TV to AV mode you will hear the sound from your PC but no video (as it will be looking for a feed through the yellow composite input). You will need external speakers.

Original Poster

Benjimoron;8862435

Maybe it doesn't have it?"Composite Video Input: AV3: RCA phono type x 1 … Maybe it doesn't have it?"Composite Video Input: AV3: RCA phono type x 1 (front)S-Video Input: AV3: Mini DIN 4-pinAudio Input (for Video): AV3: RCA phono type connectors (L, R) (1 set, front)""PC Input: Mini D-sub 15-pin x 1 (rear)"



lol as you can probably tell, I am quite tech illiterate, not sure what the above means, but if you say that it doesnt have it, i may just have to play the volume loud on the laptop alongside, although it sounds weird

PhearFactor;8862436

Just inspect the cable you have got for any cuts/broken areas. Those … Just inspect the cable you have got for any cuts/broken areas. Those types of cables are very easy to make/repair. Although they are very cheap, so you could just order another and try. The only thing I can think of to try now would be audio options on the laptop in the control panel and maybe audio settings in the menu of the TV.



cable seems to be in quite good condition despite it being old, but yeah as you say it is cheap so will try just to check whether it is the cable. I also thought it had to do with the control panel, (I have Vista), as I had to modify something in the control panel to get the laptop screen to be shown on both screens. So I went into "Hardware and Sound", "Sound" and also the "NVIDIA Control Panel" but nothing seems relevant. Will check out audio setting in TV menu though. Thanks :thumbsup:

Original Poster

dcx_badass;8862490

Normally a 3.5mm input right by the VGA socket.



im gonna try uploading picture of the back of my tv.
Anyone know how to upload pics on here?

ElliottC;8862505

Yep, audio input is to be used in AV mode only rather than PC mode.24601, … Yep, audio input is to be used in AV mode only rather than PC mode.24601, if you switch the TV to AV mode you will hear the sound from your PC but no video (as it will be looking for a feed through the yellow composite input). You will need external speakers.



Yeah im using PC mode on my tv to see the laptop screen
Im going to do a test then, and switch to AV and see if i get sound, which will tell me whether its the cable or the AV/PC issue. THanks

tinypic.com/ for uploading images.

I hope it isn't as Elliott suggests but it sounds as though that could be the issue. Pretty silly of them to have a VGA jack but no Audio jack for it lol. I haven't noticed this before although I have never had a Panny

Original Poster

PhearFactor;8862612

http://tinypic.com/ for uploading images.I hope it isn't as Elliott … http://tinypic.com/ for uploading images.I hope it isn't as Elliott suggests but it sounds as though that could be the issue. Pretty silly of them to have a VGA jack but no Audio jack for it lol. I haven't noticed this before although I have never had a Panny



Here it is:

http://i49.tinypic.com/sw4oqd.jpg

Hope it isnt the issue, as options will be limited

also manual says red and white should be inputted in the bottom right "audio" not the area labelled "audio out", neither works

Get speakers/amp.

Original Poster

Benjimoron;8862972

Get speakers/amp.



yeah looks like i might have to do that.
Thanks all for advice

Original Poster

dcx_badass;8863099

Nothing in that pic you can use, a model number/manual would be better.



oops, you mean this yeah:

hotukdeals.com/ite…=29

i have the manual as well, but so far it has not been of great help lol

24601 have you tried both the red/white jacks at the top and bottom?

Also have you tried disconnecting the other equipment while testing? (ie. the scarts)

Original Poster

PhearFactor;8863164

24601 have you tried both the red/white jacks at the top and bottom?Also … 24601 have you tried both the red/white jacks at the top and bottom?Also have you tried disconnecting the other equipment while testing? (ie. the scarts)



yeh tried both the audio ones, im thinking it is either what elliot has suggested or the lead itself.
no i never disconnected the other equipment, i will try that, i didnt realise that it would make a difference
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