Hi everyone,
I did an internal prosound mod couple months ago, everything was O.K., sound quality improved, noise gone, I loved it.
Now I got my first flashcard: an EMS 64M card.
Flashed LSDJ / Music Tec / MuddyGB to the card to do some chiptune basics, but my pro sound gameboy is humming like carzy with the EMS card (normal game cartridges are still okay!).
I'm also using a biverted mod with a 74hc04 invert chip.
I have no clue why my EMS card makes so much noise.
Maybe I should redo the internal prosound mod with shielded cable? I just used a ribbon cable for the first time.
What do you think?