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Discussion in 'Troubleshooting and Repair' started by Deigh, Jan 23, 2013.

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  1. Deigh

    Deigh

    169
    8
    Apr 26, 2011
    Am trying to repair an old 20watt amplifier, and it contains a small 8 pin I/C. I'd like to replace it but cant find it mentioned in the stock lists of local suppliers . It has the letters LF and in the next row 353DP, underneath this is the number 8543. Anybody able to point me in the direction of a replacement?
    Thanks:D
     
  2. davenn

    davenn Moderator

    13,500
    1,830
    Sep 5, 2009
    probably a LM353 dual OP-Amp

    Dave
     
  3. Deigh

    Deigh

    169
    8
    Apr 26, 2011
    LM353

    Thanks but LM353 does not seem to be available here in NZ, tried two suppliers and it is not on either of their lists. Have you another option?:eek:


    14.30 Sorry 'bout that! Had another look and found it under TL072/LF353. Will obtain it next visit to the 'big smoke':eek:
    regards


    Deigh
     
    Last edited: Jan 24, 2013
  4. davenn

    davenn Moderator

    13,500
    1,830
    Sep 5, 2009
    pretty much any dual Op Amp with same pin config

    look up a LF 353, I think from memory its a FET input version will let you check

    D
     
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