The flickering will only get worse over time. The cheap Chinese capacitors are made to last a few years - just about when the warranty expires on the component :shadedshu
Your 226BW wasn't cheap when new and is still a good LCD. The capacitor swap will only cost you
a few bucks if you...
Volkszorn88's suggestion is good.
Does your 226BW flicker at start-up? I have the same monitor that started to flicker
and a simple capacitor swap restored it to its original glory.