Beko DSC85W Interior light flashing

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  • September 21, 2020 at 3:17 pm #98382
    creast
    Participant

    I am hoping someone may be able help.
    The interior light is flashing at approx 1 per second. I have checked the bulb and holder and they are fine.
    The bulb wiring goes to a small pcb at the front of the drum, accessible by removing the control panel.
    I am not sure what else is connected to the pcb as it has a plastic guard over it and I thought I’d check on here first.
    Any clues?

    September 21, 2020 at 4:48 pm #472185
    electrofix
    Moderator

    seems like on your model you have a seperate smart board to control the lamp. on later units it made as part of the main board

    my guess is this smart card is fault

    Dave

    September 21, 2020 at 4:56 pm #472186
    creast
    Participant

    Thanks Dave. As I suspected. Strange to have a control on standard 240v filament bulb tho’ when it’s just required to light when door opens? Bet they decided microswitch too old school?
    cheers
    Rich

    September 21, 2020 at 5:48 pm #472187
    electrofix
    Moderator

    they call it a smart card for some reason.
    i would suspect it has a power supply problem as its acting like that

    Dave

    September 23, 2020 at 6:08 pm #472188
    creast
    Participant

    Hi Dave,
    Not sure if I should have started a new thread on this but the flashing light was only the start of an investigation.

    Further to my posting of the Beko DSC85W flashing light, I had thought the other reported faults on this dryer were not the case but after running it a while now I know there is a problem.

    This is a relatives dryer and she reported that it was blowing the breaker.
    I suggested she try the unit on a different socket of which tried several and managed to get the unit to run but it didn’t dry the clothes.
    I brought the dryer to my home and tried it out and it appeared to work fine, no tripping breakers and power consumption indicated the heater was consuming expected power levels.
    Subsequent testing showed it wasn’t drying on all settings so I investigated further.
    The rear thermostat resistance reads 20kohm and the heater elements check out ok for continuity, one around 30 ohms and the other around 70 ohms.
    There was no sign of any fault or overheating.
    Testing again and using a temperature probe into the drum, I found on many settings that the heat would come on only for the first 20 seconds or so.
    Cancelling and restarting shows again the heater on for 20 seconds.
    However, I switched to the 60 minute cycle and the heat stayed on, rising to 65 deg C (not sure what it should be).
    So this is the state of play at the moment. The heaters appear to work but somewhat erratically in if they will actually stay on sufficiently.

    Cheers
    Rich

    September 23, 2020 at 6:37 pm #472189
    electrofix
    Moderator

    on auto settings there has to be wet clothes in it otherwise the heaters probably wont work

    Dave

    September 23, 2020 at 6:47 pm #472190
    creast
    Participant

    Thanks for the quick reply Dave!
    OK. I will re-test with wet clothes tomorrow and see how it goes.
    Do you know what type of sensor influences this ?
    Rich

    September 23, 2020 at 9:43 pm #472191
    electrofix
    Moderator

    a lot of them have a stainless strip just inside the door that measures resistance of the wet clothes

    Dave

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