No, I would not use Windex on a modern TV screen. Many screens have coatings that do not like ammonia or harsh cleaners.
Can you clean a TV screen with Windex?
TL;DR
No. Use a dry microfiber cloth or a cleaner made for screens.
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Start with a clean dry microfiber cloth. For smudges, lightly dampen the cloth with water, not the screen directly.
Avoid spraying cleaner straight onto the TV. Liquid can run into the edges and cause damage.
Do not use paper towels, abrasive cloths, or harsh glass cleaners unless the TV manufacturer specifically says it is safe.
TV screens are not regular windows. Gentle cleaning is the safer move.
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