Green Screen using RGB Scart Cable

General information to do with the PlayStation 1 Hardware. Including modchips, pinouts, rare or obscure development equipment, etc.
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locarno
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Green Screen using RGB Scart Cable

Post by locarno » July 24th, 2016, 6:26 am

Hello, I bought a Euro SCART RGB cable. Now my screen, are always green. From sony logo to boot up game...., just always.
I'm using old Sony Trinitron 16:9 TV. What's the problem ?
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locarno
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Post by locarno » July 24th, 2016, 10:38 pm

Here I taken 2 photos:

Image Image
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gwald
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Post by gwald » July 25th, 2016, 10:36 am

stupid question, but does it work without the RGB Scart Cable?
maybe a bad cable (broken R&B lines), the chines cables on ebay are absolute crap :evil:
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Shadow
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Post by Shadow » July 25th, 2016, 5:41 pm

Could be anything:
- Bad monitor/settings,
- Missing R and B lines,
- Bad SCART cable (hence missing R and B lines).
- Faulty PSX.

My bet is on the SCART cable. Take it apart and take some photos please.
Development Console: SCPH-5502 with 8MB RAM, MM3 Modchip, PAL 60 Colour Modification (for NTSC), PSIO Switch Board, DB-9 breakout headers for both RGB and Serial output and an Xplorer with CAETLA 0.34.

PlayStation Development PC: Windows 98 SE, Pentium 3 at 400MHz, 128MB SDRAM, DTL-H2000, DTL-H2010, DTL-H201A, DTL-S2020 (with 4GB SCSI-2 HDD), 21" Sony G420, CD-R burner, 3.25" and 5.25" Floppy Diskette Drives, ZIP 100 Diskette Drive and an IBM Model M keyboard.
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locarno
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Post by locarno » July 25th, 2016, 6:47 pm

This is my cable:

Image Image Image

It happens on 7xxx and 9xxx PSX.
Without 180 resistor color is ok, but without RGB mode.

I think my TV is shit. I will check on another TV.
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Shadow
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Post by Shadow » July 25th, 2016, 7:15 pm

Use a multi-meter and test each pin from a diagram online to see if they match pinouts correctly.
It's a bit of work and it takes time, but it'll have to be done.
Development Console: SCPH-5502 with 8MB RAM, MM3 Modchip, PAL 60 Colour Modification (for NTSC), PSIO Switch Board, DB-9 breakout headers for both RGB and Serial output and an Xplorer with CAETLA 0.34.

PlayStation Development PC: Windows 98 SE, Pentium 3 at 400MHz, 128MB SDRAM, DTL-H2000, DTL-H2010, DTL-H201A, DTL-S2020 (with 4GB SCSI-2 HDD), 21" Sony G420, CD-R burner, 3.25" and 5.25" Floppy Diskette Drives, ZIP 100 Diskette Drive and an IBM Model M keyboard.
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