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Repara tus cosas

Derecho a reparar

Partes y herramientas

Introducción

Many water heaters / kettles use systems from Strix. The one I got is sold by German company Ritter.

Be extremely careful when operating the PCB out of the box as it may contain voltages of up to 320VDC !

Herramientas

Partes

  1. Before you begin, be sure to unplug the kettle base. Using Torx screwdriver, open kettle base and remove PCB
    • 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. The PCB is not conformally coated, so water splashing around the base can potentially enter and cause damage.
    • 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

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  4. Red circle: Isolation gap between 320VDC and 4.4VDC is about less than 1mm
    • 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

  5. Using hot air, desolder the TSSOP16 microcontroller labeled "Y12"
    • 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

Conclusión

Arbeite die Schritte in umgekehrter Reihenfolge ab, um dein Gerät wieder zusammenzubauen.

Thomas Widmaier

Miembro Desde 05/03/13

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