Board prep issue

[neodolphino]

Hello! Thank you so much for making this guide.

I was trying to prep/modify my CNROM board using your visual guide, and had a question. When you say "disconnect", you mean actually obliterate the existing connections you show, correct? I used a Dremel cutting wheel to do the job in the 3 places listed, and it seemed to work great, leaving no connection behind.

My issue is that when I try the board in my top loader, no music plays though the system, when it had before I made any of the mods. It also looked like from your video, that when you tested the board and got sound out, you hadn't make any board mods, just soldered on the EPROM (it's hard to tell, but it really looks that way).

I guess the question is: are the steps listed slightly out of order (or am I missing something), and will the cart likely work again once everything is wired together with the Pi and controller? Or have I done something stupid and mangled the board in a way you didn't intend? Or something else?