LCD monitor flickering - needs a service?

I have a Samsung 2233SW monitor. It's been like more than two years and was working very good.

Just a few days back, it started flickering - say once in 5 seconds, it blacks out and comes back right away - and this is at regular intervals.

I connected it to my laptop and saw the same thing. I reconnected the power plugs - both ends and saw the pins - all's good.

So, its got to be some component in the monitor - maybe a blown up capacitor.

Any experience you guys had like this? What was the servicing cost if so?