PSP LCD problem :(

I have a big problem with my LCD on my PSP and this can happed to any type LCD if its for DS or PC this can happen:

I have 9 small dead or stuck pixels all in a group there noticable while the intro of some games and very noticalbe with blue backgrounds.

I have downloaded a video that flashed green, red and blue running for 20 min now but people say it can take up to 4 - 24 hours.

LCD screens are a pain in the butt at times!