Turned it off. Turned on again channel 1 came up OK. Pressed 2 on the remote and went to channel 8 (invalid channel).
Press menu button and channel 8 comes up. Press several times menu appears but cannot change anything. If you try menu disappears.
Tried the function button. Just got a all DVB channels. banner across the bottom of the screen saying CHANNEL 8. If I press the up or down buttons on the TV I can change stations but it reverts to channel 8 in less than 10 seconds. I f I press the button twice I get channel 6 and it reverts to channel 88.
Turned it off again. Turned on channel 1 comes on for about 5 seconds then switches to invalid channel 8.
Initially I was just watching a programme and the TV switched to channel 8
Whatever button, I press 8 comes. The more times I press, the more eights I get.
Thanks anything like that is beyond my competence. I will get a new TV.
I have bought a new TV