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Ritter (Strix) Kettle 'Fontana' Microcontroller Replacement

O que você precisa

  1. Ritter (Strix) Kettle 'Fontana' Microcontroller Replacement, Open kettle base: passo 1, imagem 1 %32 Ritter (Strix) Kettle 'Fontana' Microcontroller Replacement, Open kettle base: passo 1, imagem 2 %32
    • Before you begin, be sure to unplug the kettle base.

    • Using Torx screwdriver, open kettle base and remove PCB

    • One can see the five contact rings. From inside they are: Live, Sensor +, Sensor -, Neutral, Ground

  2. Ritter (Strix) Kettle 'Fontana' Microcontroller Replacement, High voltage gap potential problem: passo 2, imagem 1 %32
    • The PCB is not conformally coated, so water splashing around the base can potentially enter and cause damage.

    • The design of the PCB is a bit unfortunate as the high voltage switching regulator is very close to the LDO and microcontroller.

    • Line input

    • Switching regulator

    • LDO and MCU

  3. Ritter (Strix) Kettle 'Fontana' Microcontroller Replacement, High voltage gap problem (2): passo 3, imagem 1 %32
    • Red circle: Isolation gap between 320VDC and 4.4VDC is about less than 1mm

    • Red arrow: Pulsed 320V (220VAC) switching regulator

    • Blue arrow: 4.4V LDO supply voltage for MCU

  4. Ritter (Strix) Kettle 'Fontana' Microcontroller Replacement, Microcontroller replacement: passo 4, imagem 1 %32
    • Using hot air, desolder the TSSOP16 microcontroller labeled "Y12"

    • Unfortunately I was not able to source the microcontroller allone yet. But I could order the entire board for 25€ which is better than nothing. Thank you Ritter

Conclusão

To reassemble your device, follow these instructions in reverse order.

Thomas Widmaier

Membro desde: 03/05/13

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