Now it still works, but when you turn it on, there's a crackling/fizzing sound from the _centre_ of the back. It's definitely not coming from the speakers.
The second I first heard it I thought "capacitor" ?
It's a very light sound - not sharp enough to be arcing. And whatever it is doesn't seem to affect the TV operation. Just be a nuisance.
If I could be bothered to pop round and spend a few minutes investigating, where would the wisdom of uk.d-i-y suggest I look ?
He's already bought a replacement, so this has been relegated to "games console" :)