Question

Turn off the television change into passive voice

Answer 1

Let the television be turned off.

Answer 2

In such conversions, you must take the second person as " you ".

Given sentence is as follows:

( You ) Turn off the television.

Hence,

The passive form or the passive voice of the given sentence will as mentioned below:

Let the television be turned off by you.

Also, it is equally true that you can ignore " by you " in the passive form. Hence the following is also correct :

Let the television be turned off.