Blenders are a staple in many kitchens, making it easy to chop, puree, and mix a variety of foods. However, when a blender stops working, it can be frustrating. The good news is that in many cases, a blender can be repaired rather than replaced. Here’s a guide to DIY blender repair:
Servicing the Multispeed Switch
The multispeed switch is a critical component in the operation of a food blender. It’s a common culprit when things go wrong. To service the multispeed switch:
Remove the blender base.
Inspect the switch, looking for loose terminals or blackened wires.
Check the multispeed switch with a continuity tester or multitester.
Clean the switch with compressed air or electrical contact cleaner, and replace if necessary.
Replacing the Fuse
Most blenders include an in-line fuse that protects the motor from overload. If the fuse is blown, it’s an easy fix:
Remove the blender base and locate the fuse.
Disconnect the wire and use a tester to check if the fuse is blown.
Replace the faulty fuse with one of identical rating.
Servicing the Motor
The motor is typically a durable component, but if it needs to be replaced, it may be less expensive to buy a new blender. To test the motor:
Place a probe on each cord prong.
Select a speed-control button or turn the speed controller slightly, then read the resistance on the meter.
Rotate the drive stud clockwise one turn. If the resistance reading changes, the motor needs service.
Tightening the Drive Stud
If the motor operates well but the blade doesn’t turn, the problem may be a loose drive stud. To tighten the drive stud:
Remove the base and turn the blender over.
Grip the drive shaft with a wrench or pliers, then turn the blender on its side to attach a wrench to the drive stud.
Hold the drive shaft steady as you turn the drive stud clockwise.
Servicing the Blade Assembly
The most common problem with the blade assembly is a leaky jar. The solution is to tighten the base. If that doesn’t work, inspect and replace the gasket. If the drive stud is turning but the blade assembly isn’t, the assembly socket may be worn and require replacement.