Hello, just posting a solution to a monitor problem.

Symptoms: No picture and power/standby light seems to operate nomally.

Problem: Surface mount capacitor connected to pin 8 of U702(LM2437T) on
Daughter board has shorted out.
Thus overloading the 12v line and causing the SMPS to shut
down. Now I didn't have a schematic nor
was I able to get a reading off of the original device. So I
measured one similar in size and it read about 1nf.

R715(3.3ohm carbon film) takes a beating and may have burned
the board. Replace if nessessary.

Also take a look at Q812 on the mainboard. It may have been
damaged too.