why do my ear phones not work with properly tv?

donnajunkie

FireFox wrote: »

How many contacts do the old headphones have? (The ones that work okay connected to the TV?)

Those that work match the middle picture and those that don't work Match the right hand picture.

donnajunkie

FireFox wrote: »

They normally work if I just pull the plug out of the socket ever so slightly to align the contacts.

This does improve performance but it is very loose, so it is likely to come out and lose sound at the slightest movement.

donnajunkie

googler wrote: »

Er, no. They don't

All those I see seem to always say compatible with android phones etc which means they have the answer call function.

googler

donnajunkie wrote: »

Do you mean to do with the function designed to work with phones that allows you to take calls. All in ear phones tend to have this it seems.

(To which I said no...)

donnajunkie wrote: »

All those I see seem to always say compatible with android phones etc which means they have the answer call function.

The ones pictured at #18 don't appear to be.

A quick look at other Sennheisers on Amazon shows a whole raft of them which are standard earphones, with no call answer or microphone capability

googler

donnajunkie wrote: »

Those that work match the middle picture and those that don't work Match the right hand picture.

So use a pair like those in the middle picture, and wear ear defenders over them.

FireFox

donnajunkie wrote: »

Those that work match the middle picture and those that don't work Match the right hand picture.

donnajunkie wrote: »

This does improve performance but it is very loose, so it is likely to come out and lose sound at the slightest movement.

It looks like you've got the same issue I mentioned then. The Sony MDRs that don't work are designed for use in a mobile phone and have a mic (and maybe volume buttons?) and I suspect it is this extra part of the plug that is shorting across one of the other contacts in the socket in the TV.
The old ones (brand?) that do work are simply stereo audio with no added functions. They, like the Sennheisers in the picture I posted, should work in your TV and your phone but for audio only i.e. no call answering buttons or mic etc.
Incidentally, I suspect the extension cable you mentioned earlier will also be audio only no matter what you plug it into (or into it!).

Also be aware that the Sennheiser CX300 are "noise isolating" not "noise cancelling". This means they rely on how well they fit in your ear but that's a whole new issue.
Just to confuse matters Sennheiser have two similarly numbered models at around the same price.
The 300s are specifically advertised on the box with "noise isolation" where as the 3.00s say they have "noise-blocking". Go figure!

donnajunkie

I finally got around to getting the sennheiser cx300 earphones. The problem is there is sound interference when connected to the tv. It is particularly noticeable when there is not much sound activity in the current scene of what I am watching. It is a bit like a radio station not being tuned quite right but not with hissing. The tv model is lg 49uh850v.