I managed to get the playstation running without any power interruptions. I removed the metal shielding, slightly bent the power pins on the motherboard connector for better contact. I think it was the shielding possibly causing grounding at the solder points. So far so good.

Have a look I don't think any solder joints from the mod chip are bridging. Photo number matches number on first post image. One game there is no random power off the other game causes it. Not sure what to make of it. https://drive.google.com/drive/folders/1izhPBtkRvLAZaHHm753VKecbnWpEB9-d?usp=sharing

Is it possible a dirty disc could cause a shutdown when the laser can not read mid game? Is there an error screen? I've seen videos where the playstation intro logo with black back ground pauses because it can not read the disc. What happens when the disc can not be read mid game?

I installed a MM3 modchip and the solder bridged one point and possibly another see reference photo in yellow point 6 for sure and maybe point 1 accidentally. Once powered on a burned game copy would adburtly stop 10 mins and then 40 into game. I then corrected point 1 and 6. Same occurrence but dif...