Grundig spool TK547

Discussion in 'General Electronics Chat' started by Bhabadeb, Apr 16, 2011.

  1. Bhabadeb

    Thread Starter New Member

    Apr 16, 2011
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    My Grundig spool model TK547 is not working properly. Its Erase circuit is not OK. It consists of BC328 /BC338 combination with 4 resistance and 5 capacitor .As per ckt about 80mA current shall be drawn by these two transistors, instead it is drawing about 20mA.The full circuit has been replaced by new components---still no result.AC voltage is not coming at erase head----this was originally 125(mono) and 150(stereo)volt AC.
    If any friend do have any idea about this ckt, I can post full image of this circuit to get a complete solution.
    Please help.
    With Thanks, ( Bhabadeb)
     
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