What is the ruling on working in the maintenance of electronic television screen manufacturing machines, knowing that work in the television field constitutes less than half of the job duties, and that a large portion of the salary goes to paying off debts, and that leaving the job entails paying significant financial compensation to the company or imprisonment?

The threat of imprisonment is considered a valid form of duress. If you predominantly believe that the manager will carry out his threat of imprisonment due to the non-payment of scholarship costs, then you are permitted to remain in the job until the threat is removed. Afterwards, you must leave it, unless you are in a state of necessity, in which case you are permitted to remain for as long as the necessity dictates, while striving to obtain a lawful income. This applies if the work is forbidden, as not all work in television is unlawful.