Maytag Neptune motor not running!

[elacesar]

Hopefully i can get some help with my Neptune here. My problem is
that i was changing the drain pump on my washer which was no problem
but when i connected it and started it i noticed a spark from a cut
orange wire which leads to the drive motor board and i saw that the
10 amp fuse was blown. I disconnected, repaired the wire, and i
replaced the fuse but once i start the washer the motor will start
for a second then the fuse blows. The washer will drain the water
but the motor will not spin. I checked the rest of the wires for any
shorts and i am stuck at this spot.. Could someone give me a little
help? Thanks

 

[James Sweet]

Hopefully i can get some help with my Neptune here. My problem is
that i was changing the drain pump on my washer which was no problem
but when i connected it and started it i noticed a spark from a cut
orange wire which leads to the drive motor board and i saw that the
10 amp fuse was blown. I disconnected, repaired the wire, and i
replaced the fuse but once i start the washer the motor will start
for a second then the fuse blows. The washer will drain the water
but the motor will not spin. I checked the rest of the wires for any
shorts and i am stuck at this spot.. Could someone give me a little
help? Thanks

Sounds like you blew one of the MOSFETs on the motor drive board. Do you
have the old through-hole board or the newer surface mount one in the
plastic box? Either way they're essentially VFDs driving a 3 phase
induction motor. The MOSFETs are replaceable, though it may have also
blown the driver chip. In my case I got very unlucky with one of these
and it blew not only half the MOSFETs and two of the driver chips but
took out the large custom controller chip as well, it was time for a new
motor board.

 

[James T. White]

Hopefully i can get some help with my Neptune here. My problem is
that i was changing the drain pump on my washer which was no problem
but when i connected it and started it i noticed a spark from a cut
orange wire which leads to the drive motor board and i saw that the
10 amp fuse was blown. I disconnected, repaired the wire, and i
replaced the fuse but once i start the washer the motor will start
for a second then the fuse blows. The washer will drain the water
but the motor will not spin. I checked the rest of the wires for any
shorts and i am stuck at this spot.. Could someone give me a little
help? Thanks

Sounds like you shorted out one of the output phases of the motor drive
board. From what I've seen, you will likely need to buy a replacement
board as faults like this generally damage more than just the output
MOSFETS.