Thank you for including makes and model numbers.
TV has RCA analog audio output.
Soundbar has a 3.5mm stereo analog audio input.
Get a cable with 2 RCA plugs at the TV end and a stereo 3.5mm mini plug at the other.
Check the TV manual on how to use the audio output.
http://www.sanyo-av.com/us/product/product.php?id=519
You may need to turn it on and turn the TV speakers off.