Bosch WAT28370gb/13 Inverter pcb blown

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  • #97940
    DPDOM
    Participant

    Been to the above today to find a blown inverter pcb.
    Does anyone know if it is caused by something else or is it usually just the Inverter??

    Regards

    Dave

    #470190
    electrofix
    Moderator

    how has it blown

    does it look like there is a cause ?

    has it gone with a bang ?

    Dave

    #470191
    DPDOM
    Participant

    It has popped a track under and to the side of a red/brown component next to the large capacitor.

    #470192
    electrofix
    Moderator

    well its not a main timer problem although you can never rule out 100{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} that its survived, i would think 95{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} chance its ok

    so your down to motor or inverter

    check where the track is going, if its going to a motor phase connection then the motor is suspect for poss damage or cause
    if its on the live in then its a possible rectifier problem. If you did a check on the bridge rectifier you may well find it short

    either way you have had high current flow you just need to figure out to where. look for other tracks where the paint has come off but not blown. A clear indication they have got hot through high current

    Dave

    #470193
    DPDOM
    Participant

    Seems like the motor is the cause. Looks like another on the scrap heap.
    Thanks so much for your help Dave.


    Dave

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