Thanks Bobby and great shop, products, and vids! We ended up taking that off and noticed some kind of black corrosion build up. It started running again, thanks!
Have a single tier stand with two pumps. Pump A first and pump B second. Pump B stopped turning on although you can see the fan turn for half a second the motor doesn't run. Took the head off of pump B and the motor works. Put the head back on and it doesn't turn on again. Moved the head over to...