I want to modify the headphone jack on my A/V reciever...

[fatfenders]

I have recently configured my entertainment center with wired headphones plugged into a (wired) remote amplifier with separate volume controls. It plugs in to my Denon A/V receiver.
Everything works great except when we want to listen to the surround speakers system we have to get up, go over to the receiver and unplug the 1/4" jack.
I would like to be able to remotely switch the speaker system on/off so that (1) both headphones AND speaker system are working and (2) Just the headphones are working.
I don't know enough about electronics to divine just what to do but I do know enough to wire up components, etc. if given a direction.
I have attached images of the headphone jack receiver(or whatever it is called).

 

[Gryd3]

I have recently configured my entertainment center with wired headphones plugged into a (wired) remote amplifier with separate volume controls. It plugs in to my Denon A/V receiver.
Everything works great except when we want to listen to the surround speakers system we have to get up, go over to the receiver and unplug the 1/4" jack.
I would like to be able to remotely switch the speaker system on/off so that (1) both headphones AND speaker system are working and (2) Just the headphones are working.
I don't know enough about electronics to divine just what to do but I do know enough to wire up components, etc. if given a direction.
I have attached images of the headphone jack receiver(or whatever it is called).




View attachment 21909 View attachment 21910

Those sockets usually have a contact (or more) used as a small switch to detect when headphones are inserted.
You can bypass this switch, but that the behaviour will depend on the device.
If the switch merely serves as a signal to mute the speakers, then bypassing it will be perfect.
If the switch causes the device to re-route audio, then it's going to be a little more involved.
You can test this quite easily with a bit of spare wire and a pear of headphones.
Simply touch two wires to the underside of that board where the ground and Left headphone pin are and see if you get sound. If yes, then you can simply cut the trace for the switch. If no, we need to go deeper.

 

[fatfenders]

Gryd3,
Thanks for the reply and advice. In the event, it was much simpler than I thought it might be after I took my first look at the board (see attachment). I realized that all I really needed to do was determine what the (5) pins that 'come' from the socket are for. It was easy enough to eliminate the headphone left/right channel and ground by following the simple circuitry back their the 3-wire input connector. That left just two pins. My hunch was that these two pins are made common when the jack is not in the socket, and open when it is. A quick continuity test showed that to be the case. At that point I determined that the simplest mod would be to leave the jack in the socket all the time and simply solder a coupla wires to the two
'swt' pins and run that wire under the carpet back to where we watch TV to a spst switch.
Of course being an electronics lightweight I didn't have all the confidence in the world that what I did was going to work but I hooked it all up, took a deep breath, turned the system on and flicked the switch. Bingo... works as advertised... almost.
I was thinking that I would have 'just headphones' or 'headphones and speakers' when, in fact its an 'exclusive or' situation. Made sense when I thought about it since I can hear a relay latch when I cycle the remote switch.
In any case, once again, thanks for the reply.