WTB Playstation 1 SCPH-7501 *NTSC* console

Hello

I am looking for a NTSC SCPH-7501 console , if anyone has one for sale please PM me. I don't need any other accessories - just the console.
I could even do with just a working motherboard - would prefer a complete working console though.

Payment via PayPal.

Thanks.

 

***2 is pal.

If you want ntsc, you would want 5550 or 5551. But I don't think those exist and would be 5500 or 5501.

 

Maybe you could be a bit clearer about what you are looking for? There is no such thing as an NTSC SCPH-5552 - that's the console that was supplied in the PAL "Value Pack" bundle with 2 digital controllers and a memory card, and will always be PAL.

If you want a NTSC console with the same motherboard as the SCPH-5552 (PU-18) then you have 2 choices depending on which territory you want:

1) SCPH-5500 - this boots NTSC:J games
2) SCPH-5501 - this boots NTSC:U/C games

Note that the reason these are 550x rather than 555x is that the "Value Pack" seems to have been PAL region only. The actual SCPH-5552 console is identical to the SCPH-5502, though.

 

Thanks for the clarifications, I did not knew that numbering changed in regions.

This is the full story:
- I purchased a PS-IO cartridge
- I want a true NTSC PS1 to mod and run my games without Hz differences
- I already have a PAL 5552 that I could take the PSU and put it in the NTSC console I will buy so that I don't have to use a stepdown converter

so basically now I want a 5501 console - since my PAL counterpart has a PU-18 mobo inside.
Thanks for the help!

 

Correct me if I'm wrong but the 550X models still suffered from gouraud shading problems. It's why I chose to use a 7501. Either way, I have a SCPH-5501 with a switch board installed that I don't plan on using. I didn't get a modchip for it though.

 

^ I did a little search and it seems this is true... I am going to change the original post so it reads 7501 now... thanks for the tip!

 

There is no mention of the 5xxx series on there. Only early pu7/8 have the issue. Later pu8 do not and the small psone also doesn't have the issue.

The pu18 in the 5xxx series has the newer chip so I don't think this is an issue.

 

There are two basic versions of the PlayStation GPU:

CXD8514Q - Used on PU-7 and early PU-8
CXD8561Q - Used on later units

The original GPU used VRAM and rendered output at the same bit depth as the framebuffer (the video DAC was driven directly by the read-only port on the VRAM) - so if the game was running in 15 bit mode (as most did) then the dithering was also rendered in 15-bit mode, causing visible banding.

The later GPU used SGRAM and the video DAC was driven by the GPU, so it always did dithering in 24 bit mode no matter what the depth of the frame buffer was.

There were multiple steppings of the later GPU, but this didn't seem to change the video output in any way I could see.

Also note that the PU-22 in the SCPH-7501 is not mechanically compatible with the PU-18 in the SCPH-5552 - the pickup assembly, controller wiring and pickup wiring are completely different.

 

great info, hope someone comes up with an available unit

 

I have a few PS1's laying around, I will PM you later tonight if I have said model (I remember selling that same model before...).

 

excellent, I will be waiting

 

PM'ed

 

deal made with Paulweeze71 - a most pleasant and great guy, thanks!

 

psx received - all is perfect! thanks Paulweeze71 !!!!

positive feedback left here: http://assemblergames.com/l/threads/paulweeze71.65468/