Bluetooth transmitter

Hi, I have just bought a Nokia bluetooth loop set and a transmitter. This has provided an excellent result from my PC via the transmitter to the Nokia bluetooth and to my aids via the telecoil. Its mutes the PC and transmits to my aids.

However when I connect to my TV I have a echo. My TV has a jackpoint that dosen't mute the sound and my aids are set for a combined normal and telecoil. It is though there is a delay from the transmission that is out of sync with the TV speakers.

I had hoped to be able to hear the TV without shutting off from family,phone and doorbells etc.

There's sure to be an answer. Any ideas please?

Mick