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Adding a 50/60hz switch to a 1989 pal sms1

Discussion in 'General Tech Help & CD Burning Help' started by Mangaman, Apr 29, 2002.

  1. Mangaman

    Mangaman New Member

    Another 50/60hz topic... anyhows,

    I'm adding a 50/60hz switch to a SMS1 which, like the topic states, is missing the usual helpful NTSC/PAL silk-screen. It is a 1989, PAL VA3 board (or so the printing tells me). I checked around, and not only is the SONY/CXK3864 not on the board (the only Sony chip is labelled SONY/CXA1145P), there are no appropriately numbered pads.

    However, I *think* I may have stumbled across the right spot. JP2 (just above the chip labelled NEC/D4168C-15) has three pads, labelled 1, 2 and 3 above each. Flipping the board over reveals 2 and 3 are linked while 1 is isolated. It's my guess this is where the NTSC/PAL pads are, but I wanted to see what other more experienced people thought.

    Any ideas? Thanks!

    -Mangaman-
     
  2. schmake

    schmake New Member

    I thought that I'd revive this dead thread.

    Mangaman was correct, I tried those points on my PAL SMS (VA3 Board) tonight and it worked.

    Woohoo!
     
  3. XxXxxxXxX

    XxXxxxXxX New Member

    Any pictures of this mod?
     
  4. schmake

    schmake New Member

    Next time I open it up I can take a photo, but the desc in the first post is spot on. You can't really miss the points
     

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