SPEED QUEEN WASHING MACHINE BOARD

DIAGNOSTICS

• Input power integrity connector H1 verified. Bridge rectifiers and voltage regulators inspected; confirmed operational.
• No control function observed from panel
• Testing micro-controller

Moisture-infused lint acts as a contaminant and conductor when it accumulates on electronic components. The fibers themselves are porous and readily absorb ambient humidity. Once damp, the lint creates a microenvironment where electrolytic reactions can occur:

• Moisture retention: Lint traps water molecules against the component surface.

• Electrolytic corrosion: In the presence of voltage potential, the absorbed moisture facilitates ion migration, leading to oxidation of metal contacts, solder joints, or exposed traces.

• Accelerated degradation: Corrosion weakens conductive paths, increases resistance, and can cause intermittent or permanent open circuits.

• Premature failure: The component fails earlier than expected because the corrosion undermines its electrical and mechanical integrity.

Parts requisition:

We are currently sourcing the required parts to complete the repair. Once all components are secured, we will proceed with the remaining work and provide an updated timeline.