I purchased a new drum sensor control and paid extra for quicker shipping.
The most difficult part of the repair was removing the central bolt that attaches the cover with magnets to the drum. Small wrenches were ineffective. I used a large plumbing wrench, and tightened the bolt slightly first, to break the factory tightened seal. The cover with magnets is heavier than expected, so keep a good grip when removing. Once off, the motor is easy to get to.
I used an upturned bucket to rest the delicate motor while I replaced the sensor. These clips in simply. Reassembly was very quick and the 10 yr LG washer now works fine again.