I have taken the TV and put it on the settee and blown out the vents and fluff as it seems to be OK for the first 30 or 40 mins. So I guess it's a heat problem like Dave mentioned.
I'm happy to buy a new and bigger one but all the other heathens say get a smaller one? Weird. I feel I need to remove it again and take the back off to investigate.
Ray.
If you do venture to do that;
1. unplug it,
2. leave it untouched for 30 minutes,
3 wear rubber gloves eg medical ones, once the back off
4. keep your screwdriver well clear of electronic components
Some things may store charge and only lose it after a considerable time, touching with a metal object could result in a multi-thousand volt shock. Not recommended for those of a nervous disposition, or those with a heartbeat.
We need to keep our members on here, so be careful…..