Product Description

The Dyson DC40 PC Board Assembly (part number 923556-01) is the OEM electronic control board for Dyson DC40 upright vacuum cleaners. This circuit board manages motor operation, power delivery, and system diagnostics. A failed PC board may cause loss of suction, power cycling, or complete unit shutdown.

This is a genuine Dyson OEM component, not an aftermarket substitute. The board is engineered specifically for DC40 models and is not interchangeable with other Dyson series (DC65, DC33, V-series). Installation requires basic technical skill and careful connector re-seating to ensure proper contact.

Compatibility: Dyson DC40 upright vacuum cleaners. This part is not compatible with DC65, DC40i, DC33, or any V-series models (V8, V10, V11, V15).

Swiss Boy Vacuum is an authorized Dyson dealer serving the Wasatch Front since 1963. We stock OEM Dyson repair parts, provide expert service, and ship nationwide. Call us at 801-298-3656 or visit our Bountiful, Utah showroom for technical support.

Why Choose This Product?

• Genuine OEM Dyson part — not a third-party replacement or remanufactured board
• Direct fit for DC40 models — restores original motor control and power delivery
• Fixes power cycling, loss of suction, and electronic faults caused by board failure
• Dyson-engineered diagnostics and safety circuits included
• Swiss Boy backed — authorized dealer with 60+ years Wasatch Front service experience

Specifications

• Brand: Dyson
• Part Number: 923556-01
• Product Type: PC Board Assembly (electronic control circuit board)
• Compatibility: Dyson DC40 upright vacuums only
• OEM Status: Genuine Dyson original equipment manufacturer part

Compatibility

• Dyson Models: DC40

Use Case

The DC40 PC board is essential for owners whose DC40 upright vacuum has stopped powering on, is cycling on and off unexpectedly, or has lost suction with no blockage detected. Electronic faults are common in corded upright vacuums after 5–10 years of use, especially if exposed to moisture or power surges. This OEM board restores full control system functionality without replacing the entire unit. Ideal for DIY-capable owners or professional service technicians who service Dyson equipment.