It is not yet broken, it just takes 5 minutes or so to get lit up.
I am reluctant to take it apart while it still works.
I am a bit of a coward, I guess. I don't mind fixing something that is broken since the downside is replacing the unit.
I am not so brave as to disassemble a working unit.
The increasing length of time that it takes for the monitor to light up may increase my bravery unless someone comes up with a parts list first.