snes black screen but can hear some sound

Hi when I try to play a game on my snes Im getting a black screen and but I do hear some sound. For example if I put super star wars in I can hear the initial sound of the lucasarts logo screen but then it sounds like some sort of crash occurs as it stays on the same note for a few seconds until the sounds fades but I dont hear the sound of the game's title screen coming on. Ive check the board and it all looks in pretty good condition, I feel like its a bad chip, has anyone had similar issues?

Thanks in advance