Many Thanks guys and Paul for his input. I can now confirm this is resolved.
Just to clarify, the item is working as it probably should do , but it makes a loud noise and is popping and bubbling. Not an easy thing to ignore.
After my first call to Currys, I was advised by the solictor at Which to email Currys to state formally that I wished the item to be returned as the item was still within the 7 days cooling off period. I was also advised by Which that returning the item under distance selling is not limited to the usage or not of the item. The point being that the item needs to be given "reasonable care and attention" whilst it is waiting to be returned. Even if I had damaged the item, I am allowed under this legislation to return the item , however Currys could then charge me under the same legislation for the damage done to it.
There is an interesting case study on their site of someone who has worn some shoes and then didnt like them and was able to return them under this legislation.
Back to the point though , I emailed currys formally to say I wanted this item returned quoting the relevent parts of the legislation and pointing to the fact that the obligations they have.
I recieved a nice call from a guy at currys today informing me they would take the item back and all is now set for its return. I mentioned about the fact that it was noisy after it was switched on and there was no mention about this causing a problem with the return of the item. Very strange as I have been told that this was an issue a few times prior.
I maybe a little harsh , but I feel the first call we made we recieved the standard T&C's from Currys to stop as many items coming back (which I can understand) and only when we pushed the matter formally did we get it resolved
I'm now happy and all is resolved (return process going ok) , many thanks for the help with this guys and many thanks Paul for the offer of getting involved. It doesnt look like this will be needed, but I'll come back once the refund has happened.
Thanks
jdpwest