Hi. First it turned out that later fat japanese ps1 models with modchip won't boot other region games than japanese.
Today I plugged gameshark to SCPH-5500 and it doesn't boot it. I have two gamesharks PRO and non PRO versions with original firmwares and none of them boots on this console.
Also in this particular one there was PSU with "125 v 2a" mark on PSU board near the fuse. Today I received 3 more japanese fat models and all of them have mark on PSU "250 v 2a" while console's sticker says 100 v.
I wonder what does it all mean? Any thoughts?