Hi! I have a 15' above ground Summer Escapes metal frame pool. Last year I upgraded the system to an Intex 2800 gph sand filter and pump with an Intex ECO8110 salt water generator. Everything worked great! I hooked everything back up yesterday, following instructions and the pump just hums. I found another thread to check the capacitor, so I took it apart. The impeller would not move until I really cranked it. I unscrewed it, cleaned it and put it back together. The motor under the top looked a little bit corroded, so I wiped it off too. Plugged it back in, basket filled with water, pump still just hums! Any other ideas or should I just buy another one?