Why has my TV got SVC v1 in the top left hand corner of the screen. Now I cannot do
Anything with the TV, can't change programmes cand use the sound nothing. I have tried pressing everybutton on the remote and on the front of the TV.

Make and model would be a start

I did answer this question but it has not appeared.
My TV is a Goodmans Portable model 1476TS. I have had it about 7 years. I still have not been able to change channels, turn the sound down, nothing at all, it just stays as it is in BBC1