@projectgus some decades ago I was working in Melbourne’s east as a called-out TV repairer. One fine morning I was called out to a retirement village in Croydon where the TV in the Common Room had died.
It was an old Pye TV, I think a 26 inch CRT monster, with a big plastic back that could be removed by inserting a large flat blade screwdriver into clip slots all around the back.
I gently pulled the back off and set it aside. The TV was so full of fluff and dust that with the back out of the way, it looked just the same, except a bit grey. It was a 3D dust sculpture of the whole back of the TV, viewed without a back.
The actual fault was a failed tripler (common back then) and often a failing tripler would burn up externally. It amazingly didn’t happen, but that dust choked old Pye might have burned that place to the ground.