Nintendo NES-101- weird repair symptom Pt1 - top loader

Weird repair symptom, smb3 works but an nrom cart doesn't? All major chips are good, still unsure what the issue is... Be sure to LIKE and SUBSCRIBE! It really helps! Visit my website for more info: www.game-tech.us Email = game.tech.us@gmail.com Thanks to Cato Lauvli catolau@gmail.com for the new intro!