Maytag washer not spinning fast/loud motor

[Redneck_Sophistication]

M/N:MAH4000aww S/N: 53286576YH

Washer sounds a bit louder then normal when started, found wash not spun dry later. 
 

Found the usual suspects, online. 
r11 resistor was not blown but had been hot, board was brown around it. Replaced resistor, triac, and wax motor. 
 

no noticeable change. 
 

pulled the drive motor, bearings are good, no burned coils, seems good. 
realized they’ve used a 3phase motor for the variable speed. Running the motor outside the unit it seems like it’s coughing and missing. This seems electronic, how does one diagnose the control board? Or what I assume is a holifex sensor on the back of the motor?

appreciate any help. 
Dave. 

[Vance R]

Spin the basket by hand and listen for noise. Then push up on the rim of the basket to check for play in the bearings, spin the basket a bit and recheck, do this several times 6 to 12 places is good. Not sure if this motor will run smooth unloaded. There is a wiring diagram at parts select in the parts break down. Look like it has a tach winding in the motor for speed detection. The out of balance sensor in this model is just 3 switch used as bump contacts, check out that circuit to make sure it is complete.

[Redneck_Sophistication]

Thanks for the reply I was really trying to diagnose this before I just throw parts at it. 
bump sensors were all good. Bearings was the first thing I checked. 

seeing it run I could tell the controller was messed, motor ran like an old 2stroke on bad gas lol

bit the bullet and ordered the new controller board/motor. Just installed and she’s running smooth and quiet. 
 

my only worry is could there have been another problem with the main board or something that caused the motor control board to fail? 
 

420$ was a lot to throw at an old washer (although I’d rather put money into this then new junk) I’d rather not have to do this again. 
 

thanks for the help 

[igloo]

2 hours ago, Redneck_Sophistication said:

my only worry is could there have been another problem with the main board or something that caused the motor control board to fail? 

Neptunes are predictable. Door locks wax motor, displacement switch contacts coming loose, pump harness coming off, bearings, motor control board on a no spin out problem if door lock has been eliminated. MCU to be replaced with the updated new motor as a kit.  Once replaced I had multiple washers run without problems for a long time. I think it was the motor that caused the problems, the new one has open sides while the old one had the windings enclosed. So maybe they eventually liked to overheat.

[Redneck_Sophistication]

well that’s good to know, if something is wrong with that motor I couldn’t see it. Had it completely apart, windings were all good. No discoloured overheated ones. Board wasn’t scorched anywhere either. 
 

hopefully I get many more years from it. 
 

appreciated