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Help with BN44-00214A PSU identifying smd diode DM804??

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    Help with BN44-00214A PSU identifying smd diode DM804??

    Ok the usual culprits with this power supply. The brown conductive glue the blown cm810 1kv 2.2nf capacitor.
    However didn't power up so identified a resistor RM813, zener diodes DZM805 failed and DM804 as well.
    I identified quickly the DZM805 BZX84C22 quickly part number on schematic.
    However DM804 I am having trouble working out i suspect its a BAV74 or BAV70 however so anyone know please so that I can order it?
    Thanks
    p.s. just noticed ohms do a kit for it as well though know mention of the component used in it.
    Attached Files

    #2
    Re: Help with BN44-00214A PSU identifying smd diode DM804??

    Well after further looking on google at the images I came across the JA BAV70 smd diodes so answered my own question!

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      #3
      Re: Help with BN44-00214A PSU identifying smd diode DM804??

      Resolved all working with parts replaced.
      See below picture. The red components were open circuit also replaced the other zener diode as used as a pair back to back (in white block). The 1kv 2.2nf capacitor shorted out with the conductive glue causing the failed other components (circled in white circles on the underside of the pcb).
      This may help someone else in diagnosing there issues with the psu as had standby voltage without any other voltages on the psu.
      Attached Files

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        #4
        Re: Help with BN44-00214A PSU identifying smd diode DM804??

        Nice work, it's always good to see repairs rather than replacing the board.

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