Washing Machine Motor Burnout and Controller Teardown

I lost my washing machine to the flooding of the basement. I wanted to indulge in the famous Photonicinduction experiment of throwing a large rock into a running washing machine and let it dance for the internet to enjoy. It did not exactly go like that.

The motor controller and driver is a Bitron Electrolux GTD/EE 150111111_00 PCB. Other markings on the inductor shows Elux A00203943. App. Type EMC11EV0. Supplier 1000150470. Boot Ver. BEFE2504 23/04/16.

Washing Machine motor controller

A inductor is placed in series with the mains AC supply to the full-bridge rectifier. A Epcos 330 uF B43231-A93 electrolytic capacitor is used to smooth out the DC bus voltage. The integrated 3-phase motor IGBT remains unknown, as it was soldered down against the PCB.

The microcontroller is a NXP freescale 56F8035 IC. It is a 16-bit 56800E family Digital Signal Controller (DSC) engine with dual Harvard architecture. Up to 32 Million Instructions Per Second (MIPS) at 32 MHz core frequency.

Read more at Kaizer Power Electronic's Blog

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