SCPH-3000 problem read

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DevilmanXXL
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SCPH-3000 problem read

Post by DevilmanXXL » October 8th, 2021, 9:39 pm

Hi guys!
I have a problem related to PS1 model SCPH-3000 ntsc jap, PU-8 motherboard.

As soon as I insert any disc of both music and games.
Once the console is turned on, the motor spindle whizzes at maximum speed in an anomalous way and obviously does not read anything.

I am attaching the video link to make you understand better:


So I state that the laser works well and the European power supply works too.

Most likely it has something to do with the motherboard. So what problem could that be? Thanks and look forward to your comments.
Visite my account Youtube: thechanneldeath

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Shadow
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Post by Shadow » October 17th, 2021, 9:11 pm

Calibrate the laser. It does that usually if the voltage is too high.
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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DevilmanXXL
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Post by DevilmanXXL » October 21st, 2021, 7:11 am

Shadow wrote: October 17th, 2021, 9:11 pm Calibrate the laser. It does that usually if the voltage is too high.
Thanks for the reply, Shadow!

I need to check it better with the voltage tester.
I also put in another working laser as well it does the same thing.

This laser which is mounted on SCPH-3000, I tested it on SCPH-1002, but it runs well.

Is it possible that I'm doing something wrong? Thanks!
Visite my account Youtube: thechanneldeath

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~PSXLoVeR95~
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Post by ~PSXLoVeR95~ » November 1st, 2021, 5:17 am

Hello!
I think the laser intensity is too high (like shadow says on the latest message).

Try to reduce the current for the laser diode (trimmer on the flat cable) and after that, check the F.BIAS.
~ My PS Collection ~
4x SCPH-1000
2x SCPH-1001
7x SCPH-1002
1x SCPH-3000
1x SCPH-3500
1x SCPH-5000
1x SCPH-5501
1x SCPH-5502
2x SCPH-7000
2x SCPH-7002
1x SCPH-7500
1x SCPH-7501
2x SCPH-9000
1x SCPH-9002
3x SCPH-102
>>IT'S A SONY

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