Connecting a TV to a home theatre

[snitchdesigns]

How can I connect my TCL model 32D2910 to an LG home theatre without getting an echo?

 

[Wolfshadw]

Which LG Home Theater System?
What is the video source (Cable, Satellite, OTA, DVD/Blu-Ray)?

-Wolf sends

 

[Solandri]

Mute the TV or turn down its volume.

Generally, when you connect a TV to a home theater system, you play the audio only over the home theater speakers, not the TV. The TV adds an indeterminate amount of processing lag to the audio and video. Your ears can tolerate about a quarter second of de-synchronization between the audio and video. But if different speakers (TV speakers and home theater speakers) start playing de-synchronized audio, it sounds like echo.

An AV receiver should do this automatically (remove the audio from the HDMI stream being sent to the TV if the home theater speakers are enabled. But if it does not, you can just mute the TV or turn down its volume.