Force PAL PS1 LCD Screen output NTSC

[Jops]

Hi everyone,

I have searched all over the net and cannot find an answer to this so thought I would ask here:

I have a PAL LCD Screen, a PS1 and a ONEchip and when playing NTSC games the screen flickers (I presume because the screen cannot refresh at 60hz)

Is there a way to allow/force the screen to display this signal?

Please do not suggest boot discs, I have those but I want to do this without swapping discs

Thanks

[Player1]

Ps model number?

[jinn]

There is no way to force NTSC2PAL when using an official PSone LCD Screen without a boot disc.
If you download ImportPlayer, I believe it will give you the option to run NTSC in PAL mode.

[Jops]

Thanks for the replies guys I appreciate the help

Player1 - My ps1 model number is SCPH-102, the screen number is SCPH-152, I built the onechip using the hex from eurasia

I have importplayer but I find that it doesn't always boot the game, how do these boot discs work? I guess something is patched in memory that forces the PS1 to output 50hz only? but surely this can be done via a modchip, however I cant seem to find the source code for the onechip and I dont think it exists on the net.

or does it?

Thanks

[jinn]

ONEchip hex and install diagrams are available in the download section.
The Official Sony PSone LCD will only display 50hz, a modchip will not fix the problem.
3rd party LCD screen support both 50hz and 60hz.
The only other option you have is to use PAL2NTSC and patch your NTSC Image [ISO] into PAL.

[Jops]

Hi Jinn,

I have been looking around on the net all day and as you say the official LCD will only display 50hz, I will have to patch my games and reburn them

Thanks for the input everyone

[jinn]

If you need help patching your games, let me know.

[kel]

As far as I know there is no easy way to make the official PAL PSOne screen display NTSC. I'm not saying it can't be done but if it can then good luck to you in finding out how, I gave up a long time ago.

I desoldered the shorting resistor on pin 46 of the MN5814 chip on the LCD control board which from what the data sheet says should have done the trick but I ended up with a stable but squashed NTSC picture with the top part duplicated at the bottom of the LCD. I then tried changing the PAL 4.43Mhz crystal to a NTSC 3.57Mhz one and still no joy.

I gave up at that point. I really didn't know what to try next and wasn't really sure wether it could actually be done or not.

[Jops]

As far as I know there is no easy way to make the official PAL PSOne screen display NTSC. I'm not saying it can't be done but if it can then good luck to you in finding out how, I gave up a long time ago.

I desoldered the shorting resistor on pin 46 of the MN5814 chip on the LCD control board which from what the data sheet says should have done the trick but I ended up with a stable but squashed NTSC picture with the top part duplicated at the bottom of the LCD. I then tried changing the PAL 4.43Mhz crystal to a NTSC 3.57Mhz one and still no joy.

I gave up at that point. I really didn't know what to try next and wasn't really sure wether it could actually be done or not.

Hi,

Where did you find the datasheet can you remember?

Thanks

[kel]

I got the datasheets and some other info from this site:

darkfader [dot] net/psx/

Post back if you get any further than I did. I still wouldn't mind finding out how to get it to display NTSC properly even though I did give up on it a while ago.