Question Vertical Lines on LED screen

Mar 12, 2020
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I recently bought a TV less than a month ago and now it has 2 vertical dead line on screen. I called the service center and they came to my house after 3 days. After they inspect the TV, they said that there are ants in the tv and there's no way to fix the unit. Is it true? I have Devant 43UHD201. Thanks.

EDIT: As per the technician there are ants in the flex wire. Is it impossible to fix?
 
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