Hello everyone, I'm a new member, new at working on espresso machines I have what I think is an early model NS Beach. I've seen a few post regarding this model, I'm just getting into trying to restore it to working condition. I can manually fill the boiler, I can turn it on and I get humming noise from the pump. I tried to turn it manually with pliers but it feels frozen. Water is not coming out of anywhere (group head, frothier, hot water) Boiler does get hot. Any reccomended ions?