PS1 games do not read

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PlayStation 2

”PS2”として知られた第6台目のビデオコンソールは、Sonyによって2000年3月に日本国内で発売されました。米国では2000年後半に発売されました。モデル番号はSCPH-30000です。このデバイスの修理には一般的なツールが必要ですが、修理は技術が必要です。

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WaxWing @waxwing3

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投稿日: 3日前2026年5月19日

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PS1 games do not read

Recently ive gotten a ps1 game and it doesnt read at all. I have a scph 39004, I dont think I have an official laser on it, my brothers back in the day took it to a repair shop because ps2 games wernt reading. Ive never played ps1 games on it, It maybe was able to read it dunno. The disc as tiny scratches but its really smudged up PS2 games work fine.

Actually it read a few times when the device was warm to the touch around 1200-900 ohms on the CD pot (not sure exactly the resistance because i didnt know how to use the multimeter). It worked once at 840 on restart but not again.

Ive done alot of test, audioCDs work but the ps1 game doesnt work, ive tried 930, 860, 840, 760 and 700ohms audioCD work every time but the ps1 game doesnt. It always loads up the memory card menu when it fails, and stays spinning on consistent speed even after it fails, so its reading the disc but fails?

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Update:

Apparently the console is pal but Ive opened it up before never saw a modchip, maybe there is one. Ive only played NTSC games on this never pal games. It endlessly reads the disc, but I got it to read a few times so im not sure if its because console is pal or some hardmode.

Also, if hot swap the disc and it reads does that mean anything? Cause if I place a ps2 game quickly eject the ps2 disc and the ps1 disc it reads it as a ps2 disc but doesnt load.

WaxWing さんによる3日前2026年5月19日

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WaxWing @waxwing3

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投稿日: 9時間前2026年5月22日

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Ok I figured out the issue, my modchip had a certain way to play ps1 games that arnt local to the system. It had to be on standby mode (red power light) then you press the power button 3 times.
In addition, FMCB (Card/HDD) had to be removed (only tested 3 times), it might work with it on but I need to lower pots for cd because its not 100% consistent its like 66% consistency, currently I have it 1350 gonna lower it to 1250 then 1150.

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Alright! Glad to hear that you found it! If there is anything, please let us know :)!

koppie007 さんによる6時間前2026年5月22日

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Update:

Apparently the console is pal but Ive opened it up before never saw a modchip, maybe there is one. Ive only played NTSC games on this never pal games. It endlessly reads the disc, but I got it to read a few times so im not sure if its because console is pal or some hardmode.

Also, if hot swap the disc and it reads does that mean anything? Cause if I place a ps2 game quickly eject the ps2 disc and the ps1 disc it reads it as a ps2 disc but doesnt load. — WaxWing
Alright! Glad to hear that you found it! If there is anything, please let us know :)! — koppie007

koppie007 @dan0 評価: 46.9千 20 18 31 · Answer 1 · 2026-05-19T22:22:53-07:00

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koppie007 @dan0

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投稿日: 2日前2026年5月19日

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Hi!

I also was thinking about the CD pot meter. But since you have tried everything here, you most likely have a broken laser.

Please make sure if there is a modchip in it, if this one is failing, it could give issues like you are having.

If there is none, try to replace the laser and see how it goes.

Guide: PlayStation 2 光学ディスクドライブレーザーアセンブリの交換

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Thanks I checked and there is a modchip its blue with M3 MP-388 does this work with ps1? Also, would it make sense to fail on ps1 games and not ps2 games? Im honestly leaning towards the disc but doesnt seem to scratched up.

Edit: Another thing could I use mechapwn with the modchip installed, if its an issue with the modchip itself?

WaxWing さんによる2日前2026年5月20日

Hi!

I would remove the modchip and try again. The PS2 should play PS1 games with or without the modchip.

If the modchip is removed and you are still facing issues, replace the laser.

I can’t help you with the modding part… sorry.

koppie007 さんによる2日前2026年5月20日

The modchip is needed, the PS2 is pal and my game is ntsc. I could look for other ps1 games to test, might head to the shops and borrow a title then return it. Though im not sure if its the modchip causing problems or the laser, I remember having hard time reading burnt discs but thats prob security thing.

Though thanks for your advice, I appreciate your response and il keep lookin into it.

Edit: My cmos battery is dead and I changed it and still dead, not sure why.

WaxWing さんによる昨日2026年5月21日

Ah, yes that is correct. If you want to play games from another region you do need it. The PS2 is not region free.

Then you most likely need to remove the old mod chip and solder a new one back in. If that fails too, then replace the laser.

CMOS batteries are known to die in there yes, replacing this should usually work... Make sure to replace it for a good one.

koppie007 さんによる21時間前2026年5月22日

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PlayStation 2

PS1 games do not read

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