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Thread: Sega Saturn Clock gen (50/60hz) chip leg snapped

  1. #21
    Foot Soldier
    Xeauron's Avatar

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    Hi guys, I basically reflowed that pin a couple of times and the mod seemed to be working again for a short while. Also interestingly, it always seemed to start working again once the machine had reached a warm/hot temp which is why I thought it has cracked solder somewhere...

    Could pin 2 on that chip play a role? I dunno, just a stab in the dark.

    Bad mate, I've decided its going to be sent off to you, so nice one for the kind offer.

    don't want to butcher this mod any more than it already has been...

    Also, thanks for the info Druid!

    Edit: Druid, do you mean it just involves a ground wire somewhere else on the board??

    Also when this connection was reflowed the console switched 50/60hz correctly (as you know) but the machine also reads 'NTSC' in the BIOS when in US/JP mode as well, which it isn't doing now, but was doing after I reflowed the solder on that pin.
    Last edited by Xeauron; 04-03-2012 at 01:47 PM.

  2. #22
    Enlightenment ASSEMbler Hardcore
    Druid II's Avatar

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    The clock generator pin 1 is pulled low by default. Meaning if its disconnected, it will act the same way if it were grounded. PAL machines need this pin set to ground, so you can leave it disconnected - it'll behave the same way if it was lifted and grounded.
    I'm not sure what pin 2 controls. Wild guess would be a signal line switching the machine between 28mhz and 26mhz, but that has absolutely nothing to do with pal/ntsc/regions/anything.

    In other words, leave the clock generator the fuck alone.

    Since your problem is the lack of 50/60hz switching, I'd inspect that line that goes up the back to the JP1/2 jumpers. It could be broken, since it has to go to the back of the board, it is possibly put under a lot of pressure. In fact, just cut it down altogether, and solder a new wire to pin 2 of SW4, which is the same connection just on the upside of the board. Pin 2 as in the pin one closer to the battery.

    1HCg6o6zJkxtjNfyzGHtwZbXgCC7Kdf231

  3. #23
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    Quote Originally Posted by Druid II View Post
    The clock generator pin 1 is pulled low by default. Meaning if its disconnected, it will act the same way if it were grounded. PAL machines need this pin set to ground, so you can leave it disconnected - it'll behave the same way if it was lifted and grounded.
    I'm not sure what pin 2 controls. Wild guess would be a signal line switching the machine between 28mhz and 26mhz, but that has absolutely nothing to do with pal/ntsc/regions/anything.

    In other words, leave the clock generator the fuck alone.

    Since your problem is the lack of 50/60hz switching, I'd inspect that line that goes up the back to the JP1/2 jumpers. It could be broken, since it has to go to the back of the board, it is possibly put under a lot of pressure. In fact, just cut it down altogether, and solder a new wire to pin 2 of SW4, which is the same connection just on the upside of the board. Pin 2 as in the pin one closer to the battery.
    I'll have a look at the board as soon as I can in about an hour. Not sure what pins/board locations you're talking about at the mo as I have fuck all knowlege of the saturn main board itself. I'll de case the board entirely and take some snaps of both sides so you can see properly!

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