Just changing the resistor pack/thermal fuse and not looking into why it blew it in the first place is a recipe for a repeat burnout.
Have you taken the motor apart and cleaned/lubricated the bearings to ensure they are not the cause of the increased current draw?
See Post #18 in this thread by @Andys though I wouldn't use WD40, it's not a lubricant, use a light oil instead.
Have you taken the motor apart and cleaned/lubricated the bearings to ensure they are not the cause of the increased current draw?
See Post #18 in this thread by @Andys though I wouldn't use WD40, it's not a lubricant, use a light oil instead.