DEJITTER MOD ON PAL 1CHIP SNES WITHOUT CSYNC

NewHome Forums Repairs and Mods DEJITTER MOD ON PAL 1CHIP SNES WITHOUT CSYNC

Viewing 2 posts - 1 through 2 (of 2 total)
  • Author
    Posts
  • #48089
    MKDragon
    Participant

    Hello,

    I just tried Dejitter 1.3 on a SNES PAL 1Chip with the SuperCIC PCB and WITHOUT RGB Bypassed mod but after plugging it (with original cable of SNES PAL), The fuse blew 🙁

    Here is the wiring below :

    5V and GND from C5.
    MCLK_EXT_i from SCIC clock output
    CSYNC_i from pin 7 of S-RGB chip or any via connected to that pin.
    MCLK_o from left hand through hole of X1 (TC1+)
    CLK_SEL_i from SCIC mode pin

    But for CSYNC_o, i am a little confused. Can you confirm that I must wire this pin in one of the following 3 configurations depending on the type of cable I am using?

    1) If I want CSYNC Dejittered : PIN 3 of AV Connector
    2) If I want Sync Luma Dejittered : PIN 7 of AV Connector
    3) If I want Composite Video Dejittered : PIN 9 of AV connector

    I am making this mod only for my SNES bench and I need it to work with the ORIGINAL SNES PAL cable (Composite Video). Do you know how I can do it for CSYNC_O ?

    And another question, I saw that in some cases we are asked to remove components. Is it necessary for PAL version ? If yes, why ?

    For example, on Borti’s Github, it says:

    “Buffered CSYNC to the MultiOut
    Other than the NTSC variant of the SNES, the PAL version has 12V at the MultiOut pin 3 instead of CSYNC. However, it’s not a big deal to change that.

    remove R28 and optionally D1
    Connect the upper pin of /CS.o (buf) to the top footprint pad of R28 (or to the MultiOut pin 3)

    You can also connect the buffered output to pin 7 (for use with sync-on-luma cables). Just remove R19 instead of R28. Same if you want to wire the buffered output to pin 9 (for use with sync-on-composite video cables). Just remove R18 instead of R28.”

    Thank you for your help !

    #48274
    TheCorfiot
    Participant

    I’m pretty sure you have 5V and GND connected the wrong way on across C5.
    Disconnect the wires and check the polarity across C5 and reconnect as necessary

Viewing 2 posts - 1 through 2 (of 2 total)
  • You must be logged in to reply to this topic.