Hey there! I would personally advise against messing with the laser potentiometer for now.

More often than not, A PS1 failing or struggling to read discs just needs some basic maintenance and a recap. The laser unit should be cleaned, and it's rails freshly lubricated, followed by replacing all the ...

Of course! I have access to many PS1s at work, I plan on dumping any missing BIOS files I can find and will be on the look out for unidentified part numbers as well.

I know you managed to get another PS1, but I came across PSOne not too long ago that showed the same symptoms your PS1 was after you reflowed the BIOS chip. Alongside the delayed and silent Orange Sony logo screen that hangs, I noticed PS601 was blowing every time I replaced it as well. The system ...

Here is a dump from my personal SCPH-9001. Modchip is Mayumi V4. Included are images showing the console itself including the underside sticker, and a couple PCB/IC shots.

I was just shy of being able to include a full motherboard shot in the archive, so here it is:
Motherboard.jpg

Motherboard ...

I read through the entire thread and searched for both KM48V2104AJ_6 and KM48V2104BS-6 chips, but wasn't able to locate any outside of Digipart, where they were all listed as "Inquiry only". I'm happy to buy used parts, but wasn't able to locate any for sale at the time.

I've now realized my ...

Did some hunting around and can't seem to find a source on these RAM chips whatsoever these days. Anyone have a source?