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Amica PI6508TF Induction Hob (PBF4VI508FTB4) - Capacitor Explosion, Nonfunctional I3 & I4 Fields

SkywalkerPL 14952 8
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  • #1 16533228
    SkywalkerPL
    Level 9  
    Good morning!
    The Amica PI6508TF induction hob (PBF4VI508FTB4) survived the explosion of capacitors in the supply module: 2x 2.2uF and 1x 1uF. To maintain symmetry, I replaced the others (1x 2.2uF and 3x 1uF) for new ones. The board fired, however, I3 and I4 fields do not work. A pot placed on the field causes "clicking" and flashing of the heating level digit (does not detect the pot). Works on fields 1 and 2.
    What I checked:
    The field sensors are functional and have not moved.
    No visible damage to the power module or power fields.
    GSIB 2060: one has between + and - 90K, and the other over 150K
    GBG032 only since the I3 field has a voltage drop between the foot 1 and 3: 870mV using a semiconductor connector multimeter. The others have an opening on these legs.

    I have no ideas. I am asking for advice on how to resuscitate a record. Measurements were made without desoldering elements.
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  • #2 16547817
    pawlok7797
    Level 12  
    Have you arrived what is broken, I have a similar problem with my disc.
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  • #3 16547833
    SkywalkerPL
    Level 9  
    It's hard ... I have some work now, but I have noticed somewhere that transistors may not get along. It is recommended to replace all 4 with "cheaper, better"
  • #4 16548000
    pawlok7797
    Level 12  
    Thank you for the information in my case, two transistors I replaced and the board works fine.
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  • #5 16548248
    SkywalkerPL
    Level 9  
    Cool! I'm glad it helped ;) this week i'll try it myself.
    Can I ask which transistors you replaced and which ones?
    Maybe it's the manufacturer's fault. I blame the power supply (poorly protected phase without panel)
  • #6 16706246
    SkywalkerPL
    Level 9  
    Transistors are good - I replaced them for certainty
    The bridge is also functional
    The electrolytic capacitors have not lost their capacity
    I suspect some short circuit on the diode, but it's hard for me to determine which one I could look at.

    I am in the process of analyzing work-around from the Czech side OK2JN2.cz but I doubt that I would find something.
    I would like a suggestion. I am posting a photo of the module
    Amica PI6508TF Induction Hob (PBF4VI508FTB4) - Capacitor Explosion, Nonfunctional I3 & I4 Fields
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  • #7 16706679
    ROBSON33
    Admin of household appliances group
    SkywalkerPL wrote:
    I would like a suggestion.


    Give a better photo, of the other side as well.
  • #9 16754038
    SkywalkerPL
    Level 9  
    The board was repaired and the 4.7? resistor and the diode soldered in the same path were burned. Replacing components was even cheaper than transistors.

Topic summary

The discussion revolves around the Amica PI6508TF induction hob (PBF4VI508FTB4) experiencing issues after a capacitor explosion in the supply module. The user replaced several capacitors to restore functionality, but fields I3 and I4 remain nonfunctional, failing to detect pots and exhibiting clicking and flashing heating level indicators. Various responses suggest checking and potentially replacing transistors, as well as investigating possible short circuits in diodes. One user successfully repaired their board by replacing two transistors, while another identified burned components, including a resistor and a diode, as the cause of their issues. The conversation emphasizes the importance of thorough diagnostics and component replacement in resolving induction hob malfunctions.
Summary generated by the language model.
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