Ramesh is correct. Pretty much most--if not all of your TV/monitors have gone this route for quite some time. Finding schematics for power supply sections are next to impossible. Very often visual inspection reveals bulgy/leaky electrolytics that is the main problem and sometimes it amybe more. If not caps, it may be a lot easier and cheaper to replace as a module.
Otherwise, reverse engineering is the only route. You can always start at the front end and work your way through the circuit.