Miele dishwasher PCB transistor blown up

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  • October 6, 2010 at 4:24 pm #57765
    Simon46
    Participant

    Miele G653SCVI plus dishwasher. Water has leaked onto the heater relay 05008870 (smoking) underneath the dishwasher from a loose side vent. Spent a fortune on a new relay from Miele to find that when the dishwasher is switched on energises heater relay permanently with no water in it so has activated resettable TOC’S. Pulled out PCB and found the following transistor with the front blown off.
    ST CHN
    T4
    1060
    E18104
    Can anybody help with the sourcing of it as i am desperate and do not have an account with RS or Farnell.

    Thanks
    Simon

    October 6, 2010 at 4:39 pm #332218
    Martin114
    Participant

    Re: Miele dishwasher PCB transistor blown up

    Hi Simon, It sounds to me like a 4 amp Triac
    Does it look like THIS

    October 6, 2010 at 4:47 pm #332219
    Simon46
    Participant

    Re: Miele dishwasher PCB transistor blown up

    Yes looks similar. I have one off a beko dishwasher pcb that is
    ST E3
    T4
    1060
    CC10K623.
    What do you think?

    October 6, 2010 at 5:14 pm #332220
    Martin114
    Participant

    Re: Miele dishwasher PCB transistor blown up

    Not sure what the difference would be Simon but it sounds like a similar device.
    Another problem may be that the circuitry that drives the triac gate may have been damaged if the original triac has blown apart.

    October 6, 2010 at 5:37 pm #332221
    Simon46
    Participant

    Re: Miele dishwasher PCB transistor blown up

    Just noticed one of the 8 triacs on the board is not connected to anything. Might try to change it across see what happens. strange it energises the 240V relay. Would think that it wouldnt give anything out.

    S.

    October 6, 2010 at 5:57 pm #332222
    Martin114
    Participant

    Re: Miele dishwasher PCB transistor blown up

    Marvelous little things. Switching amps of current at mains voltage using little more than halve a volt and very little current at it’s gate terminal!

    October 7, 2010 at 12:47 pm #332223
    Simon46
    Participant

    Re: Miele dishwasher PCB transistor blown up

    Ta mate. One more question. If i fit PCB then it requires new one does the new pcb have to be configured? I assume by Miele if so? They say not.
    Part number 5795570 £240 delivered
    S.

    October 7, 2010 at 12:55 pm #332224
    Martin114
    Participant

    Re: Miele dishwasher PCB transistor blown up

    Not sure Simon I don’t touch miele stuff myself

    October 7, 2010 at 12:56 pm #332225
    Simon46
    Participant

    Re: Miele dishwasher PCB transistor blown up

    Neither do i after this 😆

    S.

    October 7, 2010 at 6:48 pm #332226
    Simon46
    Participant

    Re: Miele dishwasher PCB transistor blown up

    Hee worked 😀

    S.

    October 7, 2010 at 6:55 pm #332227
    BobHope
    Participant

    Re: Miele dishwasher PCB transistor blown up

    Wel done Simon46,

    nice to hear of good old engineer fixes to pcbs at component level.

    Bob.

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