Hi, back 3-4 weeks ago, my Polaris booster pump (PB4-60) was malfunctioning by giving me continuous humming noise which lasted few minutes before pump got shut down. Since the pump was 10+ years old, the pool guy recommended pump replacement. Pump replaced and only worked for few hours. Capacitor got blown, capacitor replaced and the pump only worked 1 hr or so. Fuse got tripped and I am not wondering what can be wrong?

Any advise? Thanks.