No user serviceable parts
However, no harm in taking a look.
Our TV has started exhibiting some very strange behaviour, deciding of its own accord to scroll through the various settings (contrast, brightness, colour, sharpness, volume) and steadily reduce them all to minimum. It won't let us override it with the controls. We have identified the possible cause, but the component doesn't appear to be available any longer (this set is a few years old). It may be time for a new television.
If anyone enjoys watching TV in low contrast black and white with no sound, I have one to sell.