Regarding the ruling of a woman looking at non-Mahram men on the TV, we’d like to quote Shaykh Muhammad ibn Salih ibn ‘Uthaymeen (may Allah have mercy on him) on this where he said::

When women look at men, whether  on the TV or otherwise, one of the following two scenarios must apply:

1 – Looking with desire and enjoyment, which is haram because of the evil and fitnah (temptation) involved.

2 – Simply looking with no desire or enjoyment; there is nothing wrong with this according to the correct scholarly view, and this is permissible because it was proven that ‘A’ishah (may Allah be pleased with her) watched the Ethiopians when they were playing in the mosque, and the Prophet (peace and blessings of Allah be upon him) was screening her from them, and he approved of her doing that.

Women walk in the markets and look at men even when they are wearing hijab, so a woman may look at a man even when he does not look at her, on condition that there be no feelings of desire or fitnah (temptation). If there are any feelings of desire or fitnah (temptation) then it is haram to look, whether the man is on the TV or otherwise.