boat lift motor

[Lars]

Do you have the AC or DC model? If you've got the 12v version try connecting a battery right to the motor and see if that works.

[wheelerlake]

AC model. It's about 8 years old, black box on top and blue motor on bottom with remotes and light for under the canopy.

[Lars]

Gotcha. the AC motor shouldn't have any brushes in it. The motor on mine is a 3 phase motor that can also run on single phase power. Look up online how to wire power directly to the motor and see if the motor works, unless you're confident the motor isn't the problem. The controller is basically just a small VFD, which is dependent on large capacitors to work. Caps are known to go bad in audio gear, so i'd imagine it'd be the same for a VFD. Don't touch them tho, they can still carry large voltage

[Granite_33]

Your best bet may be to take it to a motor repair shop. Seems like you need to determine if the motor is still operating, or the power to the motor is causing the problem (ie the switch and board) The motor repair shop guys know how to test these to see what the problem is.

Mine is an AC and went sporadic on us. I thought we burned a winding and the motor was toast. However the motor shop took a look at it and determined it was a broken wire in the Up/Down switch box. Re-soldered it back on and its like new.

Not sure about your comment on the torque? Motors of this nature are usually designed with torque in mind. Add in the reduced gearing and the motor may be spinning at 900 RPM but producing 90 RPM at the lift crank. Is there a switch to increase the torque?

[Lars]

there is a way to program the box to change what frequency it will operate the motor at. Typically you want a lower frequency (more torque) for lifting vs going down.