Factory cut traces?

[big10p]

Were traces sometimes deliberately cut (for whatever reason) on game PCBs? I initially thought the traces in this pic were damaged, but on closer inspection, it looks like they may have been cut deliberately using some kind of punch tool. Also, this area of the PCB is hidden under a daughter board, so not really exposed to damage. The board (Wonder Boy) does seem to work ok, but I'm giving it a good clean due to one of the tile ROMs needing to be pressed down sometimes, to get it to work. Also, there's a minor issue with the snail sprites that I'm hoping a good clean will sort out.



I can't decide if I should repair these traces, or not?

 

[Lurch666]

I've seen this before. Easier for the manufactures to cut a few traces than to dump a load of incorrect PCBs.
Later revisions probably fixed this.

 

[big10p]

I've seen this before. Easier for the manufactures to cut a few traces than to dump a load of incorrect PCBs.
Later revisions probably fixed this.

Makes sense. Thanks. I'll leave well alone.

 

[Georgian2]

It looks like an sega system1 board. That traces are cut in order to use that plug-in board.

 

[big10p]

It looks like an sega system1 board. That traces are cut in order to use that plug-in board.

Yes, it's system1. Thanks. Is the daughter board a replacement for customs? There seems to be a few different board revisions for Wonder Boy.