What is the port to take audio output of a Aftron Smart TV..There are lot of ports and can't find which is it..

Hi' thanks for question. please see this video

In my experience on modern TV's they do not have stereo audio output sockets any more. You might be mistaking them for some other sockets, used to connect video cameras or projectors.
The only sound outputs would either be the optical or HDMI connectors on the TV.

Hi Vincent

That would be a heap of detail to go into. Time consuming...

Hopefully this quick pointer might help.

What is HDMI
High Definition MultiMedia Interface

Note the word MultiMedia
This Means....Both HD Video & Sound through the one cable.

HDMI is the latest state of the art connection.
Use this wherever possible. It's made for High Definition
More Convenient

Use a HDMI cable from one device to the other wherever both devices have that port type (connector).

You don't have to pay a premium ridiculous price for HDMI Cables as in the Monster type. Overpriced.
Well made regular brand & Gold pins are nice. Keep them Short.
Long Cables loose quality. 1 Meter is default.

Your LCD TV should have more than one HDMI port for inputting & outputting media (sound & video)

HDMI can be used for INPUT or OUTPUT
Eg OUT to an Amplifier or IN from a device like DVD Player.

On the OLDer equipment you will Have a YELLOW connector. That is used for the Video signal.
The RED is RIGHT AUDIO.
The WHITE is LEFT AUDIO.
Fiber OPTIC cables are a better way to transfer AUDIO than the red & white cables. Cleaner.
But this only works if the 2 devices have an optical port available.

Some New Amplifiers are smart and may require you to select the optical port in the settings instead of the default HDMI.
This may also apply to HDMI Port Choice.
Simply plug the HDMI in first & check.
Use a known source e.g. play a DVD or CD or Radio Reveiver as a signal.
ONE HDMI Port on the TV might be an OUTPUT ONLY channel (PORT) to an External Amplifier (if you wish to use one)

HDMI on external devices will be Outputing video & sound on their HDMI Port
To the INPUT HDMI PORTS on the TV.

Some TV's will fall back to a particular HDMI port on power fail or startup therefore not requiring you to use the remote every time.

External SPEAKERS should have the polarity checked. Eg Red (or marked wire) to the same post on either speaker. This makes sure that the speakers travel forward together at the same time. Pumping sound forward then retracting together....
so they are not fighting against each other.
.......This is called out of phase & distorts sound.

Hope this Helps

Enjoy Your New Entertainment
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HDMI Wikipedia the free encyclopedia

Hi,
here's the spec's for the 50" Model, it shows a headphone output and it will certainly be a 3.5 Jack: HISENSE LTDN50K321UWTS 50 inch 4K Ultra HD Smart LED TV Freeview

Sound should go through HDMI.
There may be a setting in the computer to feed the audio through the HDMI output of the computer.
http://acer--uk.custhelp.com/app/answers/detail/a_id/3416/~/configuring-a-pc-to-send-audio-via-hdmi-in-windows-vista-and-windows-7
http://answers.microsoft.com/en-us/windows/forum/windows_vista-pictures/no-audio-from-hdmi-output/28691f82-610e-4f01-be2f-b2ced7cca645

Use the newer type connectors, you'll lose quality otherwise.

This television only outputs digital audio called PCM / Dolby Digital, Fiber Optic so you may need an amplifier that has a digital in port (if the speakers are rca red and white cable plugs then the amplifier needs rca output ports). Then you would need to connect the amplifier to the speakers
. Unless the speakers have a digital in port which I am unsure on ,. The digital out audio port on your tv uses a fibre optic digital audio cable..
page 13 of the user manual shows this digital output port.
http://service.us.panasonic.com/OPERMANPDF/TCL42E50.PDF

A lot will depend on what computer you have. If your computer has got an HDMI output then you can connect this port to the HDMI input of the TV using an HDMI cable. Then in windows control panel of computer you select Display properties and select the monitor port.

I'm going on very little detail on your tv but,alot of the newer tv's do not have the analog red/white audio out ports on them any longer,audio out is output through digital coax which looks like a RCA style port but has a black or orange color ring around the center hole of the port,or output through fiber optic port on the back of the tv,this change has come about because of our digital technology!Good luck!