Avisk8

Was running g great for months but....My hot tub pump will turn on for a few seconds then off then repeats this process until the pump overheats. I replaced the capacitor and the same thing happens. I am not sure if it is the pump or the control board causing the problem. When the pump is running it only works on low speed (2 speed 240volt pump) when I push the jets button to get it into high speed it just turns off. Balboa vs500 Not sure on tub model...stickers were removed before I got it.