Blender: Trips the Power Source Circuit Breaker

The blender blades, also known as the agitator assembly, may not be turning freely if food or liquid has seeped into the bearing, causing it to seize. The motor will then have to work harder to blend food which can trip the breaker. On many newer models the control board will send more power to the motor when it detects there isn’t any movement. The more amps it pulls, the higher the likelihood the breaker will be tripped. Liquid can also seep directly into the motor causing it to short out. To replace the blade assembly, first make sure the blender is unplugged. Unscrew the base from the jar and pop out the blade assembly. Place the new blades in the base, making sure to keep the seal between the blade assembly and jar.

If a blender motor is overworked repeatedly, it will eventually become weakened to the point of burning out and tripping a breaker. To replace the motor, first unplug the blender. Remove the jar from the base and flip the base over. Remove the screws holding the plastic bottom cover on and take off the cover. You may need a screwdriver at least 3 inches in length to get to the screws in the access holes. Use a wrench to unscrew the nut which holds the inside plate in place. Carefully pull out the motor and fan, and detach the wires that connect the motor and blender base. There will likely be a yellow wire that connects the motor to the circuit board which needs to be detached with a soldering iron, and then re-soldered to the new motor. Check your manufacturer manual to find out the specific wire locations. Once the old motor is removed, install the new one in reverse order.

The power cord can trip the circuit breaker If there is a short in the cord. Replacing the power cord is a difficult repair but it can be done. First make sure the power cord is unplugged. Use a screwdriver to remove the screws on the bottom cover of the blender base, as well as the small rubber legs if necessary. The two power cord wires will be attached to the circuit or control board, and can be soldered off. If the power cord is significantly damaged, simply tugging on the cord may cause it to detach from the control board. Solder the new power cord to the same location of the circuit board, and thread the power cord through the appropriate access hole on the bottom cover of the blender base.

The jar assembly could be the cause of your blender tripping the circuit breaker if the blade assembly is attached to the jar rather than being a separate part. The blade assembly portion can have food or liquid leaking into the parts, causing the blades to seize and the motor to become overworked, tripping the power source. To fix this problem, replace the entire jar assembly on your blender.

The blender control board can also be known as the input circuit board, or PCB. Control boards have many components that work with each other to drive and regulate the motor. Sometimes these will have a component that shorts or grounds out, tripping a breaker. To replace your control board, follow the instructions above for removing the plastic cover from the base, first making sure the blender is unplugged. Remove the screws which hold the control board in place. The motor and power cord wires that connect to the control board will likely need to be desoldered with a soldering iron. Lift out the control board, and begin installing your new one by following the same steps, in opposite order.