Why this modification ?

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  • Lapwing
    Member
    • Feb 2015
    • 40
    • UK
    #1

    Why this modification ?

    Iam a newbie when it comes to this electronics stuff.

    Now i have two radio/cd players that are the exact same model but have different revisions for the PCB.

    I just wondered what the thinking was for the extra Diode on the newer pcb ?



    Tags: None
    • mariushm
      Badcaps Legend
      • May 2011
      • 3799
      #2
      Re: Why this modification ?

      Higher voltage drop, more surface to dissipate heat on , that's pretty much it.

        Comment

        • budm
          Badcaps Legend
          • Feb 2010
          • 40746
          • USA
          #3
          Re: Why this modification ?

          It looks like the board lay out has D14 and D15 connected in series and someone put a solder bridge to bypass D14, so basically right now D14 is not used, but D15 is used as the same function as D14 in the original board.
          Never stop learning
          Basic LCD TV and Monitor troubleshooting guides.
          http://www.badcaps.net/forum/showthr...956#post305956

          Voltage Regulator (LDO) testing:
          http://www.badcaps.net/forum/showthr...999#post300999

          Inverter testing using old CFL:
          http://www.badcaps.net/forum/showthr...er+testing+cfl

          Tear down pictures : Hit the ">" Show Albums and stories" on the left side
          http://s807.photobucket.com/user/budm/library/

          TV Factory reset codes listing:
          http://www.badcaps.net/forum/showthread.php?t=24809

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