What we say here is:
Capacitor: $1
Knowing where to put the capacitor: $149
With monitors, the problems are
usually capacitors. You can
sometimes identify the blown capacitor by sight or by smell.
If you are less clumsy than me, you can
sometimes replace the blown capacitor. Then, you just hope it doesn't blow again.
My first PC blew the IC (Integrated Circuit) that checked memory parity every few weeks, so every few weeks I would go to the electronics store and by another $3 IC.
Luckily for me, the IC was socketed!