The advice for 503 should be followed. Details here.
t5/Articles/TV-error-codes/ta-p/2205295
If that does not work, usually resetting the box to factory settings from the menu clears bugs.
Hope this helps and please let us know how you get on.
Please remember to mark Solved Posts with Best Answer. Doing so helps other customers and saves TalkTalk's Support Team time by only looking at unsolved topics. Thanks, Steve (a fellow customer).
