TV turns on and speaker drops down, then speaker goes back up

TV turns on and speaker drops down, then speaker goes back up, and then repeats with the speaker up and down, power stays on but no image om screen?

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crwdns2942205:01crwdne2942205:0:

Hi,

Have you tried a different signal source e.g. dvd player etc or a different input type e.g. HDMI, Component video, RF etc, to see whether the problem is in the TV or not?

Do the TV screen backlights stay turned on with no image showing i.e. lighter screen, not totally black?

What is the model number of the TV?

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