Westinghouse Stick Mixer 800W Teardown

ID: 175857

Description: The Westinghouse WHSM02SS 800W Stick Mixer is...

The device uses 2 buttons to attach different accessories to the base shaft section. These buttons (<1g) are press fit in, and with enough force they can be removed
Diameter: 9mm
Upon removing the buttons, the silver trim (<1g) around the base can be slid off
Diameter: 54mm
Height: 16mm
Following this, the metal sleeving (20g) can also be removed. This casing requires some force to take off as the tolerances are very low
Diameter: 54mm
Height: 91mm

Pry the top dial face (<1g) off using either a pry tool or a slotted head screwdriver. The dial face is made from a rubberised material
Diameter: 40mm
Height: 12mm
Upon prying, remove the click indicator, shaft, and retention spring. These are situated behind the face, providing tactile feedback to the user when operating the dial
Unscrew the 4 12mm long exposed button head M2 Phillips screws (<1g), allowing removal of the dial housing (3g)
Diameter: 53mm
Height: 20mm
Behind the housing seats a potentiometer PCB. This can be slid out from its clips. The potentiometer functions as a speed indicator, with the changing resistance corresponding to a different speed setting

The dial mechanism is made up of a few different parts, including the click indicator (<1g), shaft (<1g), and retention spring (<1g). The purpose of these parts are to provide tactile feedback for users when adjusting the speed.
Diameter: 3mm
Length: 15mm
Diameter: 3mm
Length: 7mm
Diameter: 2mm
Length: 5mm

The main plastic body (95g) can now be removed. Ideally, this would be heated up to melt the glue holding in place the accessory attachment point to the frame, however in this case a plaster saw was used along the part lines to separate the shell
Height:183mm
Diameter: 54mm
After the shell is cut, we can access the motor, main PCB, and accessory attachment point. These parts can be pulled apart with some force

The accessory attachment point is made from 3 parts: the outer shell (13g), a plastic spring (<1g), and a plastic bracket (<1g). The attachment point features several fins to aid with the alignment of accessories such as whisks, blades, etc.
Diameter/Height: 52mm
Lenght: 43mm
Width: 39mm
Height: 22mm
Diameter: 44mm
Height: 12mm
There appears to be provisions to screw the bracket and spring to the shell, however no screws were present within this particular model.

The PCB (8g) is permanently soldered to the motor. It features 2 momentary switches, controlling the on/off function and 'boost' function. There are also 2 ceramic capacitors, a transistor, a 'Tenta" safety capacitor, and 2 LED indicators
Length: 70mm
Width: 34mm
On the back side of the PCB features multiple diodes and resistors. There are signs of clear damage around the 'D5' diode leading from the mains 240VAC input. This may have been caused due to heat, leading to catastrophic failure of the device
The potentiometer daughterboard (<1g) is also soldered onto the main PCB
Length: 20mm
Width: 11mm

Attached to the PCB are the momentary buttons (2g) which control on/off and boost functions. These buttons are texturized for ease of locating, and feature passthrough for LED indication. They feature a spring (<1g) to return to their 'off' state
Diameter: 9mm
Height: 12mm
Diameter: 19mm
Height: 15mm
The mains power cable (7g) is also routed through to the PCB. It solders onto the top of the board, separated from the other componentry to protect from the high AC voltage
Length: 1070mm
Diameter: 40mm

The motor (500g) is labelled DN8112, a class 180, 800W motor, rated for 220-240VDC. The motor is held in place with a plastic bracket (2g) and has a shaft permanently mounted for attachments.
Height: 130mm
Diameter: 50mm
Height: 11mm
Diameter: 45mm
Looking through the vent holes, the copper windings are visible. The carbon brushes can be accessed from the sides of the motor for possible replacement/refurbisment. They are connected to twin 14AWG wires (<1g)
Length: 20mm
Diameter: 2mm

In addition to the mixer, there are several accessories that come with it, including the whisk attachment. This piece can be broken down into 2 distinct pieces, the whisk head (80g) and gearbox attachment (102g)
Diameter: 51mm
Height: 72
Diameter: 62mm
Height: 135mm
The gearbox attachment is geared for speed reduction, increasing rotational torque to allow for better whisking action.

The puree arm (147g) is a long shaft-driven blade intended to crush and pulp. It is intended to be used with the beaker (110g), with both pieces fitting together. The arm is made from stainless steel, as it will be submerged within food when in use. The clear acrylic beaker aids with visualising food and cleaning
Diameter: 60mm
Height: 197mm
Diameter: 90mm
Height: 172mm

The chopper is an enclosed unit designed to dice and mince food. It is made up from the chopper blade (12g), chopper lid (105g) and chopper basket (160g). Likewise to the beaker, the chopper too is made from clear acrylic to aid with monitoring food and cleaning. The blades are made from stainless steel, and are serrated to assist in cutting
Length: 95mm
Width: 40mm
Height: 85mm
Diameter: 118mm
Height: 80mm
Diameter: 125mm
Height: 115mm

The device has been fully dissassembled!
This teardown was irreversible, as cutting was involved in opening the main body. This could be circumvented in the future with heat and isopropyl alcohol to breakdown the adhesives.
For the most part, this device was not designed with repairability in mind. To fix most parts, complete replacements are required.

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