Audio problems on original Japanese PSX

General information to do with the PlayStation 1 Hardware. Including modchips, pinouts, rare or obscure development equipment, etc.
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kruuth
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Audio problems on original Japanese PSX

Post by kruuth » August 2nd, 2016, 6:59 am

I dusted off the PSX in anticipation of getting a PSIO, when I plug it in, there is some awful audio coming from the thing, through the audio ports on the back. This is one of the very original units, bought in Japan in 1995 slightly after release. It has a mod chip in it. Any suggestions? I opened it up and cleaned it, but that did nothing. All the soldering looks good.
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Post by Administrator » August 2nd, 2016, 4:59 pm

What audio is bad exactly. All audio, or just CDDA, XA or SPU based audio?
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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Post by kruuth » August 3rd, 2016, 1:29 am

When I start the unit is when it is having problems. I would think that it is all audio, however, when it plays a video, it is significantly lessened like in RE3. I made a video here:

https://www.youtube.com/watch?v=QwJQtLFLlGg

Does that help?
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Post by Administrator » August 3rd, 2016, 1:47 am

Check the SPU and SPU RAM. It's going to need a reflow on those chips.
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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Post by kruuth » August 3rd, 2016, 1:59 am

Oh my. How do I do that?
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Post by Administrator » August 3rd, 2016, 2:24 am

kruuth wrote:Oh my. How do I do that?
If you don't have the equipment, you won't be able to do it.
You can send it in to me to have it repaired, but there isn't any guarantee.
Just buy a Switch Board install option and send it in.
Otherwise, the best thing to do would be to just grab another system and install a Switch Board onto it.
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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Post by kruuth » August 3rd, 2016, 2:27 am

I'm here stateside. Not sure if sending it out is an option for you if you're in Australia.
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Post by likeabaus » August 3rd, 2016, 7:04 am

I'm also in the US. I could attempt the repair for you shipping would be cheaper that way at least and less time to wait (no customs etc).

EDIT: You would just have to pay for shipping both ways. These consoles are a dime a dozen these days to replace so its not really worth charging you anything for the repair :P
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Post by kruuth » August 4th, 2016, 3:35 am

They are...I went ahead and got another unit for the princely sum of $15 working. Now I just have to solder in a mod chip. I might take you up on it likeabuaus though, since this is one of the original PSX units from Japan.

What do you do to repair anyway?
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Post by likeabaus » August 4th, 2016, 6:19 am

In this case I would try reflowing the SPU (heating up the solder on ic legs and try to fix any bad connections. If that doesn't do the trick I would reball it (completely desolder the ic, clean it and the area around it up and resolder it cleanly). Its a lot if work but given how cheap psx's are these days, I wouldn't feel right charging for it. Tips of any amount welcome if you feel it necessary, but not required :p
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Post by kruuth » August 9th, 2016, 6:48 am

PM me...I'll see what I can do.
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