Which voltage is the LDPR chip making (MacbookPro)

Discussion in 'General Electronics Chat' started by ReneS, Feb 15, 2012.

  1. ReneS

    Thread Starter New Member

    Feb 14, 2012
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    I am still repairing a Macbook pro.
    Since 2 resistors are broken, i can not determine the voltage that is comming out of the LDPR converter.

    http://www.mijnalbum.nl/Foto-S4ZFNXLQ.jpg

    If somebody nows this voltage I can calculate the resistor values.
     
  2. R!f@@

    AAC Fanatic!

    Apr 2, 2009
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    Better pictures needed.

    I too repair macbooks.

    Infact I have a Macbook pro and an ibook G4 in service bench.

    May be I can locate the value but I need more info
     
  3. ReneS

    Thread Starter New Member

    Feb 14, 2012
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  4. R!f@@

    AAC Fanatic!

    Apr 2, 2009
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    Okay..I gtg now.. will check later tonight.
     
  5. ReneS

    Thread Starter New Member

    Feb 14, 2012
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    Thanks.

    While your checking, could you also check the resistance between pin 2 and pin 5 of the chip.

    This is the resistance between the output of the converter in relation to GND.

    This is only 5 ohms on my board.!!!
    Thats to low in my opinion......
     
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