Is it permissible to disable a receiver that broadcasts immoral films, series, and music without the knowledge of the family or its owner, given the possibility of them discovering it and becoming angry, especially since they complain when the Qur’an is played?

It is obligatory upon you to advise your family and forbid them from evil. It is not permissible for you to disable another person's device if it is used for both good and evil, or if its owner intends good with it. However, if you are certain that they use it only for evil, then try to prevent them and convince them to stay away from forbidden things. And you, yourself, should avoid participating with them in gatherings of disobedience. You are not required to forbid with your hand; for this is the father's responsibility.