Repair Logs

Punch-Out!! (Nintendo) PCB repairs

12/26/2016

Tools: Schematics, Logic Probe

Problem: Missing opponents

Bad output on LSXXX on the Video pcb.

Solution: Replaced bad 74LSXXX chips at XX and 2J on the VID board

12/26/2016

Problem: Player in the wrong spot on the screen.

My first though was this was a Video board problem.

Solutions: Buffer at location xx on the Video board was was out of circuit, repairing the trace shifted the player back to normal.