u/theburtstare

Hi. I am new to troubleshooting/repairing motors. This is a 2 speed hot tub motor - on low speed it was just humming rather than starting - I have replaced one capacitor and the other tested within 5%.
I replaced both bearings inside the motor also.
High speed works fine with no abnormal noises. Low speed just a very faint humming noise.
There’s basic schematics inside the capacitor housing and it’s all correct.

Does anyone know what may be causing this? And any tests I can run to verify?

Thanks to anyone who may be able to help.