Is it obligatory to deprive one's family of Islamic and beneficial channels that sometimes contain some forbidden things, even though they are a source of knowledge for them, especially if completely preventing them will lead to them being brought back by the family?

You have done well in your eagerness to observe the Sharia guidelines regarding satellite channels. We advise you to be gentle with your family, win their affection, and gradually reform them. What is required by Sharia is to achieve all benefits and repel all harms. If that is not possible, then the greater of two benefits should be obtained by sacrificing the lesser, and the greater of two harms should be repelled by enduring the lesser. So, do what you can to reform, fulfill your duty of advising gently and kindly, and strive to reduce evil and corruption. With patience and certainty, success will be achieved. We hope you will pay attention to the harms and dangers of satellite channels and television sets.