I have a Hayward pump & filter set up (the one that came with the aboveground package - I think it's a Powerflow II ).
At any rate, we've had the set up just over 1 year. In the past I had difficulty keeping the pressure regulated but this year I've done well and kept all maintenance, etc up and the pressure has been right at 10lbs. The other day the pump started making a really high pitched whining (screaming !) sound. My husband believes it's the brushes and that it's probably best to get a new pump. I think the pump is just out of warranty and that I'd like to know if there is any troubleshooting we can do on our own before getting a new pump. Thanks for your advice.