Philips CED-780 Bricked CD/DVD drive Little of no voltage through USB port

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  • pocgoc
    Member
    • Nov 2012
    • 36
    • Singapore
    #1

    Philips CED-780 Bricked CD/DVD drive Little of no voltage through USB port

    Hi,
    I've stuck on this problem for awhile now, there is a Bricked CD/DVD drive Little of no voltage through USB port. Its seems that the regulated 5v supply is not flowing through the circuits . I noticed when i bought the radio the fool soldered 2 pins on connector 4 (CN4). One SS24 Diode (D3) was missing on Mainboard
    Well its not bricked, really its just the voltage is little or none coming through the connector connecting to the Drive. i need a bit of help with this.
    Here is the service manual with Wiring diagrams.
    CED7-8-0 F-S-M
    Tags: None
    • pocgoc
      Member
      • Nov 2012
      • 36
      • Singapore
      #2
      Re: Philips CED-780 Bricked CD/DVD drive Little of no voltage through USB port


      the Power Ic L5957
      i got these results
      i'm not to sure about Pin 11

      Pin 1 = 3.3v✓
      Pin 2 = 5.065v✓
      Pin 3= 4.8v✓
      Pin 4= 4.7v✓
      Pin 5= 4.7v✓
      Pin 6= 4.7v✓
      Pin 7= 2.6v✓
      Pin 8= 0.0v✓
      Pin 9=11.6v✓
      Pin 10=5.1v=✓
      Pin 11=10.8v =???????????????????
      Pin 12=11.6v=✓
      Pin 13=8.5v=✓
      Pin 14=5.0v=✓
      Pin 15=11.6v =✓

        Comment

        • pocgoc
          Member
          • Nov 2012
          • 36
          • Singapore
          #3
          Re: Philips CED-780 Bricked CD/DVD drive Little of no voltage through USB port

          Found the Problem its was 15uh/3A Inductor. Got lucky i touched off it and the cd drive mechanism powered up suddenly . phewwww.
          Thanks for looking though.

            Comment

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