This YouTube video is a recording of the sound it is making.
If I remove any load from the platform, or take the motor off it, it runs without this issue. Adjusting the clutch plate on the back of the assembly does not help, nor does any cleaning of the platform itself.
Tom O. at Equatorial Platforms gave me a sort of high price to repair it, so I'd like to take a shot at it myself. I wouldn't mind replacing the motor, but I don't know how easy this one with the phone jack would be to find. Photo attached.
Has anybody else had this problem with platform motors or drive motors in general? Do you know of a good source for this type of motor? Thanks.