I have an LG55LA9650 smart TV hooked up to a Bose 3-2-1 home theater system. Playing movies or watching regular TV the audio w

[Lesco]

When playing a movie on Netflix, we have no sound, picture only.

 

[LGElectronics]

Specifically which Bose 3-2-1 home theater system do you have, series I, II or III? The LG 55LA9650 only has an Optical Digital Output for connection to external receivers or Sound Bars. Your system probably has an RCA (Red/White) stereo input on it and you will need to get a Digital to Analog converter box and an Optical Digital Cable (Also known as a Toslink Cable). Then you can connect one end of the optical digital cable to the optical digital output on the TV and the other end into the optical digital inout of the converter box. Internally, the converter box converts the signal from a digital one to an analog one and outputs it through the analog ports on the converter box to which you can connect one end of the RCA stereo (red/white) cable to and the other to the inputs on your Bose. Most consumer electronics stores or online retailers like Newegg, BHPhoto, Radio Shack, Best Buy etc., will carry these.^IV