My father brought home unlicensed games from Hong Kong for my brother and I to play on the NES in the 80s. I recall after putting in the game and powering on th

My father brought home unlicensed games from Hong Kong for my brother and I to play on the NES in the 80s. I recall after putting in the game and powering on the NES, the screen used to flash for a second, kind of like when the reset button was pressed. It's interesting to read that the negative voltage to evade the DRM may have caused that!