You have to be VERY lucky to bring a stuck pixel back to life. I've heard people say rubbing them worked, or using one of those pixel videos but I've never be able to.
In my experience, it's always been a return and hope the next one is better. If not, I cut my losses and pick something else.
Funnily enough, my new samsung CRG9 has a red pixel near the middle. That's going back tomorrow.