Your screen will revert to normal after you have switched to digital TV

  1. Your screen will revert to normal after you have switched to digital TV.

  2. Your screen will revert to normal after you switched to digital TV.

  3. Your screen will revert to normal after you switch to digital TV.

Which sentence is correct?

Thanks.

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Hi, sentences 1 and 3 both sound correct to me.

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Sentence 2 can be acceptable if it is modified as ‘Your screen would revert to normal after you switched to digital TV.’

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