When TSA opens my boxes, if they are taped boxes, then they most commonly seem to tape them back up. Not always the best job with re-taping the boxes, but not always the worst job either. But if the taped box is inside a suitcase or say duffel bag, then the chances of them re-taping the box drops off big time in my experience.

Damage to the monitor is legally covered by the airlines when it breaks as part of checked luggage on a trip covered by either the relevant Warsaw or Montreal Conventions.

The airlines COC clauses for checked baggage liability does not supersede not invalidate binding international legal agreements applicable to flights covered by such international legal agreements. And so I frequently check in replaceable electronics on my domestic US flights and on my international flights, as they are covered by the airline despite the clauses in the airline COCs.

Is the OP’s trip covered by either the Warsaw or Montreal conventions applicable to checked baggage liability for the airline? In some cases, at least for someone like me, it may be covered even if the ticketed flight (with electronics in checked luggage) is on a ticketed PNR with only domestic flights on it.