Chosen Solution

I have a psone slim model 101, that wont read mcs and the joystick wont vibrate, i tested others mcs and joystick and nothing, this problem sstarted when I open the console and the button that turn on the laser I used a screwdriver to press the button and the tip fall on the fuse and make a small sparkle, sorry for my english but i think u can understand, i hope u people answer my question

well i cant tell for sure if this happens on ps1, but on ps2 the memory card and controlers share the sabe ribbon cable. check if its loose. if its not, take it out and put it back in anyway, do a little blowing on the sockets in the mean time. after that, fire the badboy up and see if it works ;)