Yesterday while changing the bumper skirts on my MB, my " f....." screwdriver touch one millisecond both connectors of one bumper.
On the cpu, U20 literally exploded...
I have change U20 by the same of course, and now I have a check f101 f106 fuses error.
I've check the driver board and use it in an other game no issue, it's not the fuses, or Q2, and 12 volts reg is there.
12 volts reg is not on the cpu .... Do you think I have to change U23 and U24 ( referring to the schematics ) ?
Thanks for advice
All leds are fine
I don't have and don't know how to check a 74hc23 semi conductor with an oscillo.
Thanks for reading and for all your tips.
Best regards
Charlie

PS : Yeah I know ... never again with my screwdriver and pinball on