The audio connections on the TV will, most probably, be RCA type connectors.
You do not mention what type of connection the Headset has. Probably a mini Jack or a regular jack.
My husband is hard of hearing but cannot wear hearing aids so we have a headset for him use so the TV is not so loud. However, when watching a DVD (via PS3), the earphones do not work. Our setup includes the tv, Dish Network cable box and the PS3. The ourlets on the back of the TV are Audio R&L, PR, PB and Y/Video. Next to the R&L is stated "Component A/V IN". The headset and PS3 are connected to the cable box which is connected by HDMI cable to the TV. We need to know what connection we can get to plug into the audio IN of the TV for the audio to come OUT of the TV and can be heard through the headset. Remember there is no Audio OUT on the TV. If we hook the headset to the PS3, we cannot hear anything but DVD's. We have searched for a splitter that will go between the cable box and the tv but have not found one in stores or on the internet. Please help!