60-Hz-modded PAL PS vs. NTSC

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  • #20226
    Milsancho
    Participant

    I must say I’m kind of baffled after reading about the different vertical refresh between modded PAL and NTSC systems, particularly the Playstation, here:

    Dual Frequency Oscillator

    Always thought that a 60-Hz-modded PAL PS behaved exactly the same as an originally 60-Hz system when running the same game, but if I understand correctly, an NTSC PS outputs video at 59.94 Hz whilst a modded PAL PS does around 59.20. Is this right, no matter the modchip used!? And is it always like this, even with the PS One model (this poster is saying the PS One should be OK?)?

    What about other systems, such as the PAL PS2 or the SNES?

    #20233
    BuckoA51
    Keymaster

    Yes that’s correct, the oscillators in PAL systems were designed for PAL video timings, so they may not work to spec when forced to do NTSC video timings. A mod chip on its own cannot correct this.

    As for other systems, it depends, PAL PS2 will run NTSC PS2 games at the same refresh, but has the same timing issue on NTSC PS1 games. SNES has a similar (though not quite as servere) issue too, as does the Saturn and Megadrive.

    #20252
    Milsancho
    Participant

    Thanks. Learn something new everyday… Does it equally affect the PS One as well, then? Not sure if you read this line in the post lnked above:

    The sticking point is that consoles earlier than, I think, the PSone won’t run the other mode with the correct subcarrier frequency (So PAL timings on NTSC will be off, and vice versa).

    And a bit OT, but any suggestion to get a good, original KSM-440BAM disc drive these days. I don’t even know if there’s a way to tell apart original units from cheap clones, but all of them seem to come from China no matter what and look the same!

    #20269
    BuckoA51
    Keymaster

    Yes it affects the PSOne as well.

    Last replacement drive we ordered in for PlayStation we had to repair it ourselves (re-lubricate it) as it had obviously dried out in storage. After that it worked great though.

    #20387
    Milsancho
    Participant

    I have Shinetsu grease for my arcade stuff; do you think it’s safe using it for the drive’s lubrication too?

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