I represent ASA Electronics, the producer of the JENSEN brand of televisions, stereos, and speakers and the Voyager brand of observation monitors and cameras. At ASA, we strive to provide excellent customer service and product satisfaction and would like to offer some assistance in this matter.
The most likely reasons for not hearing the TV sound through the stereo are: the AWM970 is not in AUX mode; the AUDIO OUT on the TV is not connected to the AUX IN on the stereo (see page 17 of the JE3208 owners manual); or the TV speakers are not turned OFF in the AUDIO MENU (see page 22 of the JE3208 owners manual).
Check these recommendations and see if this corrects. Please let us know if you need any further assistance with this.
JENSEN and Voyager Tech support Team