Sony PSX SCPH-5502 Modchip/NTSC Problem

Discussion in 'Sony Programming and Development' started by deksar, Mar 8, 2009.

  1. deksar

    deksar Member

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    Sony PSX SCPH-5502 NTSC colour problem

    Hello.

    I have a SCPH-5502 model PS1 console. It is modded. But i don't know anything about its modchip. I would like to keep that old, good console.

    My question is;
    It doesn't support NTSC games. (Boots in only black&white color). I have a PAL TV. Is there any way to play NTSC games with full color with it?
    A diagram for model 5502 maybe, or an updated/better modchip? Is there any solution other than using something like NTSC (RGB)/PAL converter?

    Suggestions?

    Thanks. Best wishes..
     
    Last edited: Mar 8, 2009
  2. ConsoleFun

    ConsoleFun Gutsy Member

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    The easy way to get color on the SCPH-5502 is simply to use an RGB cable.

    The reason you don't get color for NTSC games on PAL machines (and vice versa) is a bandpass filter in all PlayStations pre SCPH-7000. There are mods to get color by forcing the chrominance subcarrier to be at the PAL frequency for NTSC games. These result is "NTSC 4.43" for NTSC games which a lot of PAL televisions can handle.

    Unfortunately the mods for the pre SCPH-7000 models is a little bit of hassle as you need to install a small pcb with a crystal. Maybe you could find one of these for sale, but I havn't seen any for years.

    So, RGB is the simple solution.
     
    Last edited: Mar 10, 2009
  3. deksar

    deksar Member

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    ConsoleFun, Thanks very much for your answer.

    Actually i've also heard something like using RGB cable but i still didn't understand about it. Isn't it just a "Scart cable" ?

    Is it something like this? :
    http://www.techstufftrading.com.au/images/psxscart.jpg

    If yes, I tried that. Exactly this one. But no result. The game was still black-white.

    Many thanks.
     
  4. ConsoleFun

    ConsoleFun Gutsy Member

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    Not all SCART cables have the RGB pins wired up, but this exact one does according to www.techstufftrading.com.au.

    Your TV must have a SCART socket that is wired up for RGB as well. Quite a few TVs only support RGB input on the first SCART socket. Some TVs with SCART don't support RGB at all.

    I would also check the voltage on pin 16 in the SCART connector, which signals whether composite video or RGB should be used. Pin 16 should be in the range 1-3V for RGB, and <1V for composite video.
     
  5. deksar

    deksar Member

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    Well.. Thanks a lot. I'll try that.
    Many thanks for your time, ConsoleFun.
     
  6. Piratero

    Piratero Peppy Member

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    I have that very same cable hacked up for RGB display on my NEC XM37. Its actually pretty damn useful to have those RCA jacks already there. :nod:
     
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